问题

With more trees being destroyed, huge quantities of soil ________ each year.

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

正确答案是：

同类题型

_____ are these tomatoes—thirty dollars.

These teenagers don’t know much of theworld yet; that’s why they are so easily _________

He asked me how much ________ on the mountain bike

Would you mind answering some questions on shoppinghabits— ________

have plenty of time tomorrow, soyou work too late tonight．