When a space shuttle has accomplished its _____, it can be ready for another trip in about two weeks.
| A．venture | B．mission | C．commission | D．responsibility |
—How do the shops make money if they sell at such low prices?
—Manufacturers, it seems, are willing to bring down prices _______ big volume purchases.
| A．under the name of | B．on behalf of |
| C．in return for | D．in preparation for |
At less than $100 this smart and digital camera is good _______ for money.
| A．value | B．offer | C．price | D．currency |
—How much is _______ for a schoolbag?
—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
| A．far more; no | B．too much; not | C．very much; any | D．many more; much |
_______ she was standing and waiting for a bus that she caught sight of the former President Clinton.
| A．It was while | B．As soon as |
| C．While | D．During the time when |
I was just going to move away the heavy case but someone _______ it. Was it you?
| A．has done | B．would do | C．had done | D．will do |