Ⅰ.单句语法填空
1．He couldn't make himself ________(hear) above the noise of the traffic.
2．His father sent him to Hainan to see if he could earn his ________(live) there.
3．By no means ________ theory be separated from practice.
4．The boy took ________ the toy car, but couldn't put it together again.
5．I'll answer to your mother ________ your safety.
