To their great relief, the missing child returned home, ______, after an absence of two weeks.
| A．looked tired and healthy | B．tired and healthy |
| C．tiredly and healthily | D．looking tired and healthily |
A person's __________ body temperature is about 37℃.
| A．ordinary | B．normal |
| C．common | D．usual |
The program, __________ at improving the students' ability of listening and speaking, will surely be a success.
| A．to aim | B．aimed |
| C．to aiming | D．having aimed |
He didn't answer, with his gun __________ at David.
| A．aims | B．to aim |
| C．aiming | D．being aimed |
Teachers are now aware of the difficulty that some students have __________ attention.
| A．paid | B．to pay | C．paying | D．pay |
—I made it at last. I am on top of the world!
— __________
| A．Congratulations. | B．Don't fall down! |
| C．Oh, really? | D．So far, so good. |