Cho dạng đúng của động từ trong ngoặc
1.   Unless you (tell) __________________ the truth, I won’t help you.

2.   You’ll get pneumonia if you (not change) _________________ your wet clothes.

3.   If I had known that you couldn’t eat octopus, I (not buy) _________________ it.

4.   If they (hang) _________________ that picture lower, people would be able to see it.

5.   She (be) _________________able to walk faster if she didn’t have such high-heel shoes.

6.   I (bring) _________________ you some beer if I had known that you were thirsty.

7.   If you had touched that electric cable, you (be) _________________ electrocuted.

8.   If the story hadn’t been true, the newspaper (not print) _________________ it.

9.   I (not buy) _________________ things on the installment system if I were you.

10.         Dan (arrive) _________________ safe if he drove slowly.