Is this the research center _____you visited the lab last year ?
| A． which | B． the one | C．that | D．where |
Soon , Mary _____ the shock and became calm again.
| A．recovered | B．recovered from | C．affected | D．covered from |
The children were surprised by the sudden _____ of their teacher．
| A．enter | B．entrance | C．entry | D．come |
---Mike, you know, I have read the book twice!
---______? I have read it so many times that I can recite it now.
| A．How come | B．What do you reckon | C．What for | D．So what |
—I hear you have an experience in the Royal Air Force. Is that ture?
—Yes. I ______ in the Royal Air Force for six years.
A. served B had served C joined D have joined
Life is tough in the city. In order to lose their ______, some people drink alcohol.
| A．temper | B．mood | C．consciousness | D．pressures |