问题

The country has already sent up threeunmanned spacecraft, the most recent ________ at the end of last March.

A:celebratedon
B:having been launched
C:being launched
D:to be launched

正确答案是：

同类题型

The poor boy couldn’t work the problem out. He wasn’t ____clever.

The piece of good news made me ______ .

September is _____ month of theyear.

to thank my friend John, without _____ help, Iwouldn’t have been saved.

Do you go to school by bus every day—Yes, I ________ take a bus.