Small sailboats can easily turn over in the water ______ they are not managed carefully.
| A．though | B．before | C．until | D．if |
I’d like to know ________ Chinese.
| A．when he began to learn |
| B．where did he begin to learn |
| C．when did he begin learning |
| D．for how long he began to learn |
— Must I finish my homework before class is over?
— No, you ______. You can hand it in tomorrow.
| A．mustn’t | B．shouldn’t |
| C．can’t | D．needn’t |
--Will Anna attend the party?
--If her husband doesn’t go, _________she.
| A．so will | B．neither does |
| C．neither will | D．so does |
The mother often tells her son to be a good boy, warning him to _____ trouble.
| A．keep out of | B．hold back from |
| C．break away from | D．keep up with |
This heavy rain made______ impossible_______ us to complete the task on time.
| A．that; of | B．it; for |
| C．this; for | D．it; of |