＿＿＿the people have become the master of their own country＿＿＿science can really serve the people.
| A．It is only then； that | B．It was that； when |
| C．It is only when； that | D．It was when； then |
—This is your order, a hamburger and an apple pie .
—I’ll have it here.
| A．Anything ease | B．Is that OK |
| C．Something to drink | D．For here or to go |
The old scientist took up walking as a regular form of exercise, which, of course, is of great to his heath.
| A．benefit | B．favor |
| C．sense | D．relationship |
—I can never forget the days we spent together in the summer camp.
—Well, especially the day it suddenly began to rain in the middle of the night.
| A．when; when | B．which; when |
| C．what; that | D．on which; when |
At no time the rules of the game. It was unfair to punish them.
| A．they actually broke | B．do they actually break |
| C．did they actually break | D．they had actually broken |
We made it possible the task would be finished ahead of time within three weeks.
| A．what | B．that | C．which | D．how |