_______ you keep on practicing English, I’m sure you will be able to speak it fluently.
| A．As soon as | B．As long as | C．Even if | D．As if |
Gary was behaving as if nothing _______.
| A．happened | B．has happened |
| C．had happened | D．will happen |
Father _____ our washing machine the whole morning. He must get it done before lunch.
| A．has repaired | B．repairs |
| C．will repair | D．has been repairing |
----- Did you buy the dictionary?
---- No. My lost dictionary was found, so I ________ a new one.
| A．didn’t need to buy | B．needn’t have bought |
| C．shouldn’t have bought | D．mustn’t have bought |
I walked as fast as I could, ________to catch the 930 train.
| A．hoping | B．to hope | C．hope | D．hoped |
The dog has a(n) _______ sense of smell while the rabbit has a sharp sense of hearing.
| A．acute | B．cautious |
| C．flexible | D．valid |