问题

.People have planted a great many trees inorder to _____ wind and sand in the desert.

A:wonder
B:hold up
C:hold back
D:hold out

正确答案是：

同类题型

Teenagers allowedto drive in the street .

Professor Johnson, I’m afraid I can’t finish thereport within this week. –_______ How about next week

The girl __________ to me that she had __________ the book on the shelf.

下列说法中不正确的一项是（）

Thank you for giving me a hand. I ______ in the experiment without your valuable help.