.
After some time in the dark cave, our eyes slowly _____ the dark.
| A．used to | B．adapted to | C．accustomed to | D．helped to |
The reason ______ he gave for being late was ______ he overslept this morning.
| A．why; that | B．which; that | C．why; because | D．which; because |
In class the teacher’s humorous words often make every student ____ laughter.
| A．burst into | B．break into | C．fall into | D．come into |
Look out! Don’t get too close to the house ______ roof is under repair.
| A．where | B．that | C．whose | D．which |
The teacher said that Columbus _______America in 1492.
| A．discovered | B．found | C．had discovered | D．had found |
—When Tom________，please let me know.
—Mary said when Tom________，just tell her about it.
| A．comes；comes | B．came；came |
| C．comes；came | D．comes；coming |