Earth is believed ______ by an object the size of Mars at some point in the distant past before itssurface cooled.
| A．to be hit | B．to have hit |
| C．to have been hit | D．to hit |
Since no evidence has been found so far he was guilty, he has to be set free.
| A．before | B．whether | C．that | D．when |
—Mary, do you still remember the first time we met?
—of course, You Helen’s birthday party with your friends in a restaurant.
| A．attended | B．had attended | C．were attending | D．have attended |
the magazine today and you can get all the 26 magazines for just $ 99.
| A．Correspond to | B．Attach to |
| C．Appeal to | D．Subscribe to |
The newcomer went to the library the other day and searched for he could find about Mark Twain.
| A．wherever | B．however | C．whatever | D．whichever |
As soon as Jack saw his new sports car, he was eager to it .
| A．try; for | B．try; on | C．try; out | D．try; in |