— I can’t get through to the general manager’s office.
—The line is busy. Someone ________ the telephone.
| A．must have used | B．could use | C．could have used | D．must be using |
—____________?
—Very well, thanks.
| A．How are you |
| B．How do you do |
| C．Where are you |
| D．What are you doing |
I need five Yuan to ______ for summer camp.
| A．spend | B．cost | C．pay | D．take |
The students are studying at home computers.
| A．in | B．at | C．on | D．of |
The movie is so__________, and many of us are ____________ in it.
| A．interesting; interested |
| B．interesting; interesting |
| C．interested; interested |
| D．interested; interesting |
I met a friend of mine _____ I was walking in the park.
| A．before | B．when | C．after | D．if |