We writing a letter of complaint to the manager himself．But we'd like to hear your opinion first．
| A．have been thinking of | B．had thought of |
| C．were thinking of | D．thought of |
--Is this the office ________ your parents are working now?
--No. They are working in the next one.
| A．in which | B．in where |
| C．that | D．which |
About seventy percent of the population in China _______ farmers.
| A．is | B．be | C．are | D．will be |
--I saw Mr. Smith at Wuhan Station this morning.
--You ________ have made a mistake. He’s still on holiday in Canada.
| A．can | B．must |
| C．can’t | D．needn’t |
The girl student ________ to stay at home rather than go to the concert with the naughty boy.
| A．enjoys | B．considers |
| C．prefers | D．looks forward |
He is so smart a student that he can make himself________ in simple English. That’s the reason why we like to talk with him.
| A．understand | B．to understand |
| C．understood | D．understanding |