--- He worked out such different questions at a very young age.
--- Oh, he ______ a very smart student then.
| A．could have been | B．should have been |
| C．might have been | D．must have been |
A person’s ____ body temperature is about 37C.
A. ordinary B. normal C. common D. usual
When I came in, I saw him ______ in a chair deep in thought.
| A．sat | B．seated | C．seating | D．being seated |
Will you please spare me some ink? I have ______ it.
| A．run down of | B．run out of | C．run out from | D．run off |
When we think of communication, we _____ think of using things, talking face to face, writing messages and so on.
| A．shortly | B．probably | C．practically | D．normally |
He says he really can’t ______ to wait another day.
| A．waste | B．afford | C．spend | D．cost |