Could you help me_______ when the plane will take off on the Internet ?—— I’m sorry , my computer doesn’t work.

____ educational CD-ROM has just come out. _____ CD-ROM is called ‘Dora Explorer’.

This bookJenny’s. Because her name is on the cover of the book.

You should be _______ careful when you take the chemistry exam.—I agree. In this way, I will make _______ mistakes.

Ann helps Lily with her homework _____ eight o’clock _____ Sunday. [ ]