----- Nội dung dịch tự động từ ảnh -----
**Ex 9. Choose the best answer**

1. If you __________ fewer calories than you burn, you __________ lose weight.
A. should eat/ might
B. must eat/ do
C. eat/ will
D. will eat/ should

2. If you don’t know how to spell a word, you __________ look it up in the dictionary.
A. must
B. will
C. should
D. ought

3. __________ has enough apples, she’ll make an apple pie this afternoon.
A. Should she
B. If she
C. Will she
D. Unless she

4. If the sun __________, we for __________ a walk.
A. shines - will go
B. shone - will go
C. shone - would go
D. had shone - would go

5. I will never talk to you again __________ you apologize me __________ your being rude.
A. if - for
B. unless - for
C. or - of
D. whether - or

6. __________ you work harder, you will be sacked.
A. Whether
B. If
C. However
D. Unless

7. You __________ put some sunscreen on your skin __________ you want to avoid the harmful effects of the sun.
A. should/ if
B. must/ if
C. need/ unless
D. will/ unless

8. Unless we __________ more snow, we can’t go skiing.
A. will have
B. have
C. have had
D. had

9. You’ll fail the exam __________ you start revising.
A. if
B. until
C. when
D. unless

10. Unless you wash the car, you __________ not drive it at the weekend.
A. could
B. may
C. have to
D. may