— Can we leave the classroom now?
— No, you ______. You ______ to leave until the bell rings.
| A．mustn’t, are allowed | B．don’t have to, are allowed |
| C．needn’t, aren’t allowed | D．can’t, aren’t allowed |
A moment, please! Let me take down what you’ve said _______ I forget.
| A．before | B．when |
| C．until | D．after |
—Dad, please tell me when Mum _____.I miss her very much.
—She will return when she _____her task. And she will bring a nice present for you.
| A．returns; finishes |
| B．returns; will finish |
| C．will return; finishes |
| D．will return; will finish |
Do you want to be healthy? ______. Smiling can help you stay healthy.
| A．Smile | B．Smiling |
| C．To smile | D．Smiled |
If you know nothing about the famous program called Where are we going, dad?, you ______be living in a box!
| A．would | B．can |
| C．must | D．need |
Ted will never forget the days he spent with his grandmother in the countryside.
| A．when | B．that |
| C．what | D．how |