—Tom came to work last Friday ,but no one has seen him since.
— he have had an accident ?
| A．Should | B．Must | C．Might | D．Could |
Never before _____seen anybody who can play tennis as well as Robert.
| A．had she | B．she had | C．has she | D．she has |
He’s got himself into a dangerous situation he is likely to be accused of meeting someone.
| A．where | B．which | C．while | D．why |
He's late, __is often the case.
| A．as | B．what | C．it | D．this |
As soon as all the chairs are _______, we can let the people _______ outside enter.
| A．in the place; waiting | B．in place; waiting |
| C．in the place; waited | D．in place; waited |
A pop star, _______drug abuse, may get an 18-month prison term.
| A．defended against | B．accused of | C．charged of | D．reminded of |