—Charlie has been nowhere for three days. What has happened to him?
—Didn’t you know he had gone to Hong Kong?
| A．in sight | B．in place | C．in face | D．in use |
—I can’t find Xiao Ping, where did you see him this morning?
—It was in the library______ he studied．
| A．that | B．where | C．which | D．the one |
—________ matters to do the job well —what you are or where you come from?
—Neither. It depends on whether you put your heart into it.
| A．Which is it that | B．What it is that |
| C．Which it is that | D．What is it which |
----How unhappy your roommate looks!
----Yes，but he’s not willing to tell me what it is____ is troubling him.
| A．what | B．which | C．as | D．that |
It was along the Mississippi River _______ Mark Twain spent much of his childhood.
| A．how | B．which | C．that | D．where |
It was not until midnight __ they reached the camp site.
| A．that | B．when | C．while | D．as |