—What you can do is _______ more English if you want to learn English well.
—You mean _______ more English is useful to me?
| A．practicing, practice | B．to practice, practicing |
| C．practicing, practicing | D．to practicing, practice |
Chinese is one of ______ subjects in our school.
| A．more important | B．the most important |
| C．important | D．importantest |
I was watching TV ______ my mother was writing an e-mail to her friend.
| A．as soon as | B．after | C．until | D．while |
We must study hard so that we can get a good job when we ________.
| A．take care | B．speak up | C．set off | D．grow up |
David worked _______ a waiter in a restaurant in his part-time.
| A．to | B．as | C．from | D．before |
_______ she is in trouble, her friends will help her out.
| A．Before | B．Whenever | C．Although | D．Because |