问题

The country has already sent up three unmanned spacecraft, the most recent ____ at the end of last March. [ ]

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

正确答案是：

同类题型

My brother doesn’t wear a coat. She often _____ a white T-shirt.

one side of the road grass should be planted,and ______.

Rather than ______ on a crowded bus, he always prefers　a bicycle

Sichuan is home to giant pandas, ________ are China’s national treasure loved by people all over the world.

It rained heavily in the south _______serious flooding in several provinces