The Math problem is too difficult , we really don’t know ________ to do it .
| A．which | B．where | C．what | D．how |
---What do you think of ______Bai Yansong?
---He is _______ good host（主持人）that I like his program very much .
| A．a ; an | B．/ ; the | C．/ ; a | D．the ; a |
---Excuse me. Is the library open all day?
---. Only from 8 a.m. to 4 p.m.
| A．Yes, of course | B．That’s right |
| C．Sorry, I’m not sure | D．Sorry, I’m afraid not |
You afraid of doing homework. You know, it’s easy. Just be careful.
| A．don’t have to | B．have to be | C．don’t have | D．don’t have to be |
---The best time Wuxi is in spring.
---Yes, I think so.
| A．visits | B．to visit | C．visit | D．visiting |