David is ______ animal fur, so he won’t visit anyone who has cats or dogs in the house
| A．curious about |
| B．allergic to |
| C．satisfied with |
| D．fond of |
We ________ take clean drinking water for granted. One day we may run out of it.
| A．needn't | B．can't |
| C．won't | D．shouldn't |
Parents are doing all they ________ to help their children achieve their ambitions.
| A．shall | B．can |
| C．may | D．need |
________ for the fact that she broke her leg, she might have passed the exam.
| A．Hadn't it been | B．Had it not been |
| C．Was it not | D．Were it not |
His pale face suggested he ________ angry and I suggested that he ________ at once.
| A．should be; should leave | B．was; left |
| C．was; leave | D．be; left |
I ________ sooner but I didn't know that they were waiting for me.
| A．had come | B．was coming |
| C．would come | D．would have come |