The boy was made to the explanation(解释，说明 process of explaining) .
| A．speak | B．tell | C．repeat | D．say |
I have to take the driving test tomorrow. Therefore, today I’m going to practice again and again
| A．park | B．to park | C．parked | D．parking |
The two friends ______on the Internet for three hours, and they would go on till the next morning.
| A．have been chatting | B．had been chatting |
| C．were chatting | D．had chatted |
He was in hospital for 6 months. He felt as if he was ______ from the outside world.
| A．cut off | B．cut up | C．cut through | D．cut out |
______ from the space, the Great Wall looks like a dragon.
| A．Having seen | B．Seen | C．Seeing | D．To see |
I could just see a car in the distance, but I couldn’t _____ what color it was.
| A．look out | B．get across | C．make out | D．take after |