．--- I hear Robert has gone to Harvard University for his master’s degree．
--- Oh, how nice! Do you know when he ____?
| A．was leaving | B．left | C．had left | D．has left |
-- How did 
you like his speech?
-- Oh, it was very good. What he said ________ like a poem.
| A．sounds | B．was sounded | C．sounded | D．is sounded |
“Drive-ins” have large parking lots ________ customers are served in their cars by waitresses.
| A．who | B．when | C．which | D．where |
We rushed to the football court, only to see a sign ________ into the ground reading PERIODIC MAINTENANCE （定期维修）.
| A．knocked | B．knocking | C．to be knocked | D．being knocked |
The Japanese people keep up cheerful spirits ________ the world that they can get over the crisis caused by the terrible tsunami（海啸）.
| A．being convinced | B．convinced | C．to convince | D．having convinced |
The government spokesman has to ________ his words before responding to reporters.
| A．pass | B．weigh | C．cover | D．express |