My uncle has been taught in this school _______ he was twenty years old.
| A．since | B．for | C．until | D．after |
Let’s work out this math problem together,?
| A．shall we | B．will you |
| C．do we | D．can you |
Molly is so busy, so she needs someone to care for her babyshe is away.
| A．after | B．before | C．while | D．until |
The new clock is so nice. Could you tell me______?
| A．who can use | B．when can I use it |
| C．what can I use | D．how I can use it |
The city library ______many people are eager to study in has been open up to all the public.
| A．where | B．which | C．that | D．/ |
You shouldn’t stay at home all the time. You’d better go out and relax now and then, ______?
| A．hadn’t you | B．didn’t you |
| C．had you | D．did you |