---Can those _________ at the back of the classroom hear me ?
| A．seat | B．sit | C．seated | D．sat |
Tom helped us settle down in this new city, is very kind of him.
| A．that | B．it | C．which | D．where |
—I am going to America.
—how long you there?
| A．are; stayed | B．are; staying | C．have; stayed | D．did; stay |
The geography teacher told his student that the earth ________around the sun .
| A．traveled | B．travels | C．would travel | D．travelling |
_________useful advice it is ?
| A．What a | B．How a | C．What | D．How |
John rushed out in a hurry，the door .
| A．leaving; unlocked | B．leaving; unlocking |
| C．left; unlocked | D．to leave; unlocking |