The ambulance was just arriving, for a worker, who ______ the window on the second floor, fell off the window.
| A．had been repairing | B．was repairing |
| C．has been repairing | D．would be repairing |
Many a man _____ come to help us.
| A．have | B．has | C．is | D．are |
The Olympic Games ____held every ____years.
| A．is； four | B．are； four | C．is； five | D．are； five |
Where ____rubbish， there are flies.
| A．there are | B．there is | C．is | D．there h |
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 |