–Excuse me, is this seat taken?
_______. That man got his books and left a few minutes ago.
| A．I am afraid so. | B．I don ’t think so. |
| C．I don ’t know. | D．I hope not. |
The children are having fun ________ on the playground.
| A．to play | B．play | C．playing | D．played |
We are supposed to ___________a solution to stop people from looking down at their mobile phones while driving cars.
| A．come up with | B．come from |
| C．come out | D．come true |
.I was supposed ___ at 7:00 ,but I arrived at 8:00.
| A．arrive | B．to arrive | C．arrives | D．arriving |
This kind of skirt looks ___ and sells _____.
| A．nice well | B．nice; good | C．well; well | D．good nice |
After Mandela was free (自由的) in 1990, he chose to shake hands with the people ________ wanted to kill him.
| A．whose | B．which | C．/ | D．who |