China is  f         for the Great Wall. It’s really wonderful.
—When did you  a         at the Beijing Station?  —At about seven in the morning.
You may  b         some books from the library, but you must return them on time.
In order to  i           your English, you should study harder than before.
He sent an  e          to his American pen pal last night.
Tom is not here. Could you please take a             (信息) for him?
You must be              (小心的) when you go out at night.
She often helps me with my English in her            (空闲的) time.
Please help me             (浇水) the plants when I am away.
I             (梦想) of flying to the moon some day.