Your trousers____ dirty.You must have____ washed.
| A．is;il | B．are;it | C．are;them | D．is;them |
Whenever a patient needs an injection of Penicillin, the doctor does need to make sure whether his patient is ___ to the medicine.
| A．sensitive | B．addicted | C．allergic | D．efficient |
With all the food supply ___, the researchers had to put an end to the wildlife protection project and returned home.
| A．running out | B．to use up | C．run out of | D．using up |
I was not hearing to the teacher, or else I ___ his questions.
A. answered B. had answered C. would have answered C. have answered
Boss ___ us taking some days off to get refreshed after so many days of hard work.
| A．expected | B．advised | C．hoped | D．suggested |
As the international situation is growing more complex, what China needs should be a ___ foreign policy.
| A．fragile | B．fragrant | C．flexible | D．frustrated |