He used to be ________ UNICEF worker, but now he is really ________ excellent basketball player.
| A．an； an | B．a； an | C．a； the | D．the； an |
An apple a day is good _______ your health.
| A．to | B．in | C．at | D．for |
假设你是Joe，你的好朋友Betty因为过于在意考试结果而感到焦虑，请给她写一封信，谈谈你的看法，并且给她一些建议。
Her first job was selling ice cream in Chinatown, close to _____ she and her family lived.
| A．which | B．what | C．there | D．where |
How kind you are! You always do what you can_________ me.
| A．help | B．helping | C．to help | D．helps |
One of the difficulties we have English is how to remember new words and expressions.
| A．to learn | B．in learning | C．learn | D．learned |