________in his test papers，he didn’t notice my coming.
| A．Having absorbed | B．Absorbed |
| C．Absorbing | D．To be absorbed |
The gym is a public place, so you should be ________ and leave all the machines clean after using them.
| A．considerate | B．cautious | C．subtle | D．modest |
The ability to _____ one another for past wrongs is one of the greatest attributes that anyone should possess or exercise.
| A．explain | B．forgive | C．excuse | D．apologize |
They were close ______ each other in high school and now are still ______ touch.
| A．to; with | B．to; in | C．with; in | D．with; with |
—I have won the first prize in the recent English contest.—______________!
| A．Congratulations | B．Cheers | C．Best wishes | D．Good luck |
I hurried back home only ________ that I had left my key at my office.
| A．to find | B．finding | C．having found | D．found |