If Peter ___________late, we ___________for him.                                                    (be/ wait)

7. If I ___________this test, I ___________my English.                                             (doing/ to improve)

6. If you ___________this letter now, she ___________it tomorrow.                         (to send/ receive)

1. No one ___________you if you ___________yourself.                                           (help/ (not help)

2. If you ___________water, it ___________into the atmosphere as vapor.               (boil/ disappear)

3. If it ___________tonight, I ___________for walk.                                                  (rain/ not go)

4. Lan ___________shopping if she ___________time in the afternoon.                    (goes/ have)

5. If it ___________today, she ___________to the movie.                                          (not rain/ go)

32. If you don't do exercise, you won't be healthy.

      A. I don't want to                                                        B. I'm OK

      C. Thank you. I'll exercise more.                                D. That's fine.

33. Wow! Your new bike is so cute.

      A. I don't know                                                           B. How about riding a bike?

      C. Yes. My uncle gave me yesterday.                        D. We can cycle to school

22. If people ____________ public transport, there will be less pollution.

      A. use                             B. will use                            C. can use                             D. used

23. If I pass this exam, I ____________ to the university next summer.

      A. went                          B. have gone                        C. will go                             D. goes

24. We will be late unless we ____________ now.

      A. leave                          B. don’t leave                       C. had left                            D. have left

25. You will get a good seat if you ____________ first.

      A. came                          B. come                                C. have come                       D. will come

26. What can we do ____________ air pollution?

      A. reduce                       B. to reduce                          C. reducing                          D. to reducing

27. If people turn off all electric appliances in one hour all over the world, they can save lots of ____________.

      A. electric                       B. electrical                          C. electrician                        D. electricity

28. Don’t throw rubbish ____________ the river because you will make it dirty.

      A. into                            B. up                                    C. at                                     D. of

29. If you have old clothes, will you give them to those ___________?

      A. needs                         B. to need                             C. in need                             D. for needing

30. Please collect all recyclable materials, and take them to the ____________ factory.

      A. recycle                       B. recycled                           C. recycling                          D. recyclable

31. Your school is so green with lots of trees!

      A. That's a good idea.                                                

      B. Congratulations!

      C. There are many trees here.                                    

      D. Thank you. We're planting some more flowers.

IV.  Write the correct form of each verb in brackets.

1. No one ___________you if you ___________yourself.                                           (help/ (not help)

2. If you ___________water, it ___________into the atmosphere as vapor.               (boil/ disappear)

3. If it ___________tonight, I ___________for walk.                                                  (rain/ not go)

4. Lan ___________shopping if she ___________time in the afternoon.                    (goes/ have)

5. If it ___________today, she ___________to the movie.                                          (not rain/ go)

6. If you ___________this letter now, she ___________it tomorrow.                         (to send/ receive)

7. If I ___________this test, I ___________my English.                                             (doing/ to improve)

8. If you ___________the glasses into very hot water, they ___________.                 (put)/ crack)

9. If Peter ___________late, we ___________for him.                                                (be/ wait)

10. If I ___________your ring, I ___________it back to you.                                     (finds/ giving)

V. Complete the sentences with a, an, the.

1. That house on _______corner has beautiful flowers.

2. Friday is always _______hard day.

3. Is there _______old woman in your family?

4. Shall we meet at ______same place tomorrow

5. This is _______only car I could buy.

6. I live in _______beautiful town.

7. The children ate _______orange and two pears.

8. I’ll be there in about _______hour.

9. I bought _______new shirt yesterday.

10. I loved to feel _______warm sun on my skin.

VIII. Circle the correct article.

1. “There are some books and a magazine.” “Can I read a/ the magazine?”

2. My dad is an/ a engineer.

3. The fridge is in a/ the kitchen.

4. “Can I borrow a/ the pen?” “Yes. Would you like blue or black?”

5. “Is there a/ an computer in your classroom?” “No, there isn’t.”

6. “Can I have a/ the banana?” “Sorry. That banana is for your dad.”

7. “I’m reading a new book.” “What is a/ the book about?”

8. “Where is a/ the car?” “It’s over there.”

9. “How long is the journey?” “An/ The hour and fifteen minutes.”

10. I don’t know an/ the answer to this question.