Gun control is a subject ______ Americans have argued for a long time.
| A．of which | B． with which |
| C． about which | D．into which |
_____at what he said, she asked him why he said so to her.
| A．Amazing | B．Amazed | C．Having amazed | D．Surprised |
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