Answer keys
Answer key to Practice 1: Zero conditional
Complete the zero conditional sentences with the verb in brackets.
Answer key to Practice 2: First Conditional
1. If you don't study (not study), you will fail (fail) the test.
2. We will die (die) if we don't get (not get) help soon!
3. If you look (look) in the fridge, you will find (find) some cold drinks.
4. If there is (be) no oil in the engine, the car will break (break) down.
5. I will lend (lend) you my umbrella if you need (need) it.
6. The sea level will rise (rise) if the planet gets (get) hotter.
7. If you eat (eat) your sandwiches now, you won't have (not have) anything for lunch!
8. You will be (be) safe in an accident if you wear (wear) your seatbelt.
9. If he saves (save) all his money, he will be able to go (be able to go) on holiday to Canada.
10. I won't come (not come) with you if you don't bring (not bring) John!
Answer key to Practice 3: Second Conditional
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If Joe was (be) here, he would catch (catch) some fish for supper.
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It would be (be) nice if the rain stopped (stop)!
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I would sing (sing) you a song if I had (have) my guitar.
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If I had (have) a better sleeping bag, I wouldn't feel (not feel) so cold.
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If this tent was (be) any smaller, one of us wouldn't have to sleep (have to sleep) outside!
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I would look (look) out for bears if I were (be) you!
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If I wasn't (not be) so hungry, I would share (share) my beans with you.
Answer key to Practice 4: Third Conditional
After I graduated from university, I applied for a marketing position with a prominent bank with branches all over the world. I didn't get the job because they wanted someone who spoke Spanish fluently. I (could, take) could have taken Spanish in high school, but I didn't. I took an acting class instead. If I (take) had taken Spanish, I (get) would have got the job. Just imagine, if I had actually gotten the job, I (move) would have moved to Spain. My entire life (could, go) could have gone in a totally different direction. If I had accepted the job and moved to Spain, I (might, meet) might have met a Spanish woman and (get) could have got married. If that had actually happened, I probably (stay) would have probably stayed in Spain. We (might, have) might have had children. Unfortunately, I didn't get the job and I didn't go to Spain. I got a boring job and I live alone. If I had just taken Spanish, my life (be) would have been much more interesting.
Answer key to Practice 5: All Conditional Forms
1. (If / When) When I leave work, I usually go to the fitness center to work out.
2. She hates TV. She thinks television is a waste of time. (If / When) If she watches any television at all, it is usually a documentary or a news program.
3. My friend always keeps in touch by mail. (If / When) If I get a letter, I usually write back immediately.
4. If I (have) had enough money, I (go) would go on safari to Kenya. However, my bank account is empty!
5. I love to travel! When I (have) have enough money, I (go) go abroad. I do it almost every year.
6. I really wanted to go on safari to Kenya with my friends, but I couldn't afford to go. If I (have) had had enough money, I (go) would have gone with them.
7. I'm sorry, I didn't know you were allergic to chocolate. If I (know) had known, I (make) would have made you a vanilla birthday cake.
8. Stop asking me what Amanda bought you for Christmas. Even if I (know) knew what she bought you, I (tell, not) wouldn't tell you.
9. Nobody here speaks English. Too bad Gloria isn't here. If she (be) were with us, she (can) could act as our interpreter.
10. I am afraid I won't be able to come to your wedding next week because my company is sending me to New York to attend a trade show. I (miss, never) would never miss your wedding if I (have) had a choice in the matter.