________ at the door before you enter my room, please.
| A．Knock | B．Knocking | C．Knocked | D．To knock |
theater
| A．treasure | B．wheat | C．season | D．realize |
If she doesn't want to go, nothing you can say will her.
| A．persuade | B．promise |
| C．invite | D．support |
You have to move out of the way the truck cannot get past you.
| A．so | B．or |
| C．and | D．but |
I had been working on math for the whole afternoon and the numbersbefore my eyes.
| A． | swim | B． | swum |
| C． | swam | D． | had swum |
Film has a much shorter history, especially when_such art forms as music and painting.
| A．having compared to | B．comparing to |
| C．compare to | D．compared to |