Don’t start reading a book ________ you find that it’s one you can read with ease and understanding.
| A．when | B．if | C．unless | D．though |
— Did you see the boys yesterday afternoon?
— Yes. I saw them ________ the fence when I passed.
| A．climb | B．climbed | C．to climb | D．climbing |
— How could you ________ my sister so easily in the crowd?
— Because she stood out in her red dress.
| A．pick up | B．pick out | C．take up | D．take out |
As a film star she was a success, but as a wife she was ________ failure, so their marriage ended in ________ failure.
| A．/; / | B．/; a | C．a; a | D．a; / |
— I went to the beach and got plenty of rest.
— ________ . You looked tired last time I saw you.
| A．You’d better not. | B．Why not travel abroad? |
| C．I am glad you did. | D．Sounds like a good idea. |
Don’t leave the water ________ while you brush your teeth.
| A．run | B．running | C．being run | D．to run |