People have planted a lot of trees and grass in order to ____ wind and sand in the desert.
| A．hold down | B．hold up | C．hold back | D．hold out |
.Now,lots of universities have been set up in _________ used to be waste land.
| A．what | B．which | C．that | D．where |
He is such a lazy man _________ nobody wants to work with __________.
| A．as;him | B．that;/ | C．as;/ | D．whom;him |
She said that the building would be finished by October,__________ I doubt very much.
| A．that | B．this | C．when | D．which |
_________ is well known to the peasants,pests continue to eat crops, damage.
| A．It;causing | B．As;caused |
| C．It;caused | D．As;causing |
On my birthday I got a watch from my uncle,__________ was made in Japan.
| A．who | B．that | C．which | D．what |