问题

With more forests being destroyed，huge quantities of good earth ________ each year

A:is washing away
B:is being washed away
C:are washing away
D:are being washed away

正确答案是：

同类题型

No language stays the sameAll languages develop and change ____ time[ ]

Here _____. This is our classroom.

If we want to arrive at the village on time, we’d better ________.[ ]

My friends always get better grades than I do. Whatshould I do–

ed a lot of questions, and none of______ was easy to answer.