．The silence of the library is sometimes broken by a sudden cough or the sound of pages _______.
| A．turning | B．turned | C．being turned | D．having turned |
_____ the watch____and see if something is wrong with it.
| A．Take; apart | B．Take; out | C．Put; apart | D．Put; out |
Treat______ to _____tea to help you relax at the end of the woek.
| A．on; a | B．oneself; the | C．you; / | D．yourself; a |
He wanted to pass the exam and styed up very late, this_____ creates further problems.
| A．in turn | B．in case | C．in doubt | D．in short |
Mary passed the driving test,_____ surprised everyone in the office.
| A．which | B．what | C．this | D．it |
---- Did you visit the Big Ben in London?
---- No, we ______ it, but we spent too much time shopping.
| A．could visit | B．could have visited | C．must ahave visited it | D．can have visited |