18．We had better ______ the doctor earlier.　　　　　　　　　　　　　　　　　 [　　 ]

A．to see　　　　　　　　　　　　　　　 B．seeing

C．having seen　　　　　　　　　　　 D．have seen

17．Before we finished the dinner, the waiters started to ______ the dishes and to ______ table.　 [　　 ]

A．clear; clear away　　　　　　　 B．clear away; clear

C．clear; clear　　　　　　　　　　　　 D．clear away; clear away

16．Hello! I______ you ______ in Shanghai. How long have you been here? [　　 ]

A．don't know; were　　　　　　　 B．hadn't known; are

C．haven't known; are　　　　　　 D．didn't know; were

15．He said he was quite pleased with his new house, ______that he had also enjoyed the beautiful place around the house.　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 [　　 ]

A．having added　　　　　　　　　 B．to add

C．adding　　　　　　　　　　　　　　 D．added

14．----______ at that cinema this evening?　　　　　　　　　　　　　　　　　　 [　　 ]

---- A new film.

A．What's put on　　　　　　　　　 B．What's on

C．What's in　　　　　　　　　　　　 D．What's for

13．---- Will you waste your time and money on that?　　　　　　　　　　 [　　 ]

----______

A．Certainly no.　　　　　　　　　 B．Certainly not.

C．Certainly don't.　　　　　　　　 D．Certainly won't.

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12．---- Must I write down the new words now?　　　　　　　　　　　　　　 [　　 ]

----No, you ______.

A．don't have to　　　　　　　　　 B．should not to

C．mustn't　　　　　　　　　　　　　 D．need not to

11．Hello! I______ you ______ in Shanghai. How long have you been here? [　　 ]

A．don't know; were　　　　　　　　 B．hadn't known; are

C．haven't known; are　　　　　　　 D．didn't know; were

10．The clever boy made a hole in the wall, ______ he could see what was happening inside the house.　　　 [　　 ]

A．in which　　　　　　　　　　　　　　 B．through which

C．at which　　　　　　　　　　　　　　 D．on which

9．She had two daughters, ______ became doctors.　　　　　　　　　　　　 [　　 ]

A．all of them　　　　　　　　　　　　　 B．all of whom

C．both of them　　　　　　　　　　　 D．both of whom