(2013·高考新课标全国卷Ⅱ)It’s an either­or situation －we can buy a new car this year or we can go on holiday but we can’t do________.

I can’t find a proper person _______ I can depend to help me.

Did he find _____ hard to learn a foreign language?

After winning the singing competition, she thought herself ___ in her neighborhood

—Do you think playing cards is beneficial to our study?—No，if ________，it can help us kill time when we have nothing to do.