Bob never does his homework ________ Mary. He makes lots of mistakes.
| A．so careful as | B．as careful as |
| C．not as carefully as | D．as carefully as |
Talking with foreigners is a useful way to ____ /ɪm'pru:v/ our English.
| A．invite | B．important | C．improve | D．impolite |
We should eat more fruit and vegetables to keep ______/'helθɪ/.
| A．happen | B．health | C．hardly | D．healthy |
Please open the window and let the _____ /freʃ/air in.
| A．fresh | B．flash | C．fish | D．future |
Library is a good ______ /pleɪs/ to study for a test.
| A．play | B．place | C．plant | D．plan |
I go to school every day on my new _______ /baɪk/.
| A．bag | B．bed | C．back | D．bike |