He is absent ____ is often the case.
| A．what | B．which | C．who | D．as |
When people move to another country, they often try to________ the customs of their native land.
| A．turn on | B．bring up | C．keep up | D．give up |
Due to bad weather，the police had to__________the search for the missing boy.
| A．resign | B．abandon | C．conduct | D．release |
——Recent years have________ rapid changes of my hometown.
——Yes, I could hardly recognize it when I arrived yesterday.
| A．watched | B．contributed | C．made | D．witnessed |
——The speaker got confused, and started _________ himself.
——No wonder no one believes what he said.
| A．contrasting | B．comparing | C．proving | D．contradicting |
Affected by the earthquake happening in March, seven springs____________.
| A．dried up | B．dried out | C．dried off | D．dried away |