He is doing his homework ______ the help of his brother.

[    ]

　　A. behind   B. under   C. of   D. with

I can't do this work well ______ Tom's help.

[    ]

　　A. under   B. for   C. without   D. from

The earth is one of ______.

[    ]

　　A. the suns' planet (行星)    B. the suns' planets

　　C. the sun's planet　　　　   　　D. the sun's planets

Of all these books, do you think which one is ______? 

[    ]

　　A. interesting　　    B. much interesting

　　C. more interesting   D. the most interesting

I am waiting ______ the teacher ______.

[    ]

　　A. on, to come　　  B. for, to come

　　C. on, coming　　   D. for, come

It's time ______ class. Let's ______ into the classroom.

[    ]

　　A. to, to go   B. for, go to   C. for, go   D. in, go

Is there ______ you don't understand? 

[    ]

　　A. anything important   B. everything important

　　C. important anything   D. important everything

By now about ______ have visited the museum.

[    ]

　　A. ten thousands people   B. ten thousand peoples

　　C. ten thousand people    D. ten thousands of people

The maths problem was very difficult, ______(最后，終于) he worked it out.

[    ]

　　A. at last   B. in last   C. to the last

You must ________ more careful. The car ________ hit you.

[　　]