问题

We have planted many trees in order to ____wind and sand in the desert.

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

正确答案是：

同类题型

I lost my way in complete darkness and, ____matters worse, it began to rain.

None of us expected the chairman to __________ at the party. We thought he was still in hospital.

It’s but we can’t do .

___we do this today or tomorrow doesn’t make much difference

I don’t like physics ______ it’s too difficult for me.