问题

Enough to stop the forest since the 1980’s

A:has been done;be cut down
B:has done;cutting down
C:has been done;being cut down
D:had done;from being cut down

正确答案是：

同类题型

a good view of the scenery in China, Lucywould spend a lot of time on the train _________ travel by air

Guangzhou was the second Chinese city to host the Asian Games because Beijing ________ the event before.[ ]

Chinese students have than American students, so American studentsspend at school than Chinese students.

he retired from the office, Tom ______painting for a while, but soon lost interest

He wondered if he could slip out of the lecture hall without anyone _____.