Your trousers ____dirty， you must have _____washed.
| A．is； it | B．are； it | C．are； them | D．is； them |
Apples of this kind ____.
| A．tastes good | B．tastes well | C．taste good | D．taste well |
The police ____the murderer everywhere when he suddenly appeared in a theatre.
| A．is searching for | B．were searching for | C．are searching for | D．were searching |
John has two brothers， but either ____out of work now.
| A．are | B．is | C．has | D．have |
____can be done _____been done.
| A．All； have | B．All that； have | C．All； has | D．All that； has |
The Chinese people _____hard-working and brave.
| A．are | B．is | C．has been | D．are being |
Nobody ____to smoke in the cinema.
| A．allows | B．allow | C．is allowed | D．are allowed |
The air in big cities _____very dirty by factories.
| A．are often made | B．is often made | C．have often made | D．has often made |
The number of people invited _____fifty， but a number of them _____absent for different reasons.
| A．were； was | B．was； was | C．was； were | D．were； were |
All but one ____here just now.
| A．is | B．was | C．has been | D．were |