____ they are closest friends is not clear though they live together.

_________we sleep together or apart is one of the biggest cultural differences, and only in western societies ______ the feeling that babies should sleep apart from their parents.

．—Steve           come back because the window is open．

—Yes．but he _______left it open last night．

It is everybody’s desire that every effort___________ to reduce the pollution in our city.

 It’s high time that Dalai Lama ______ playing politics.

 Many women ______ a good salary, but they chose to stay at home for the family.

I wouldn’t marry Pat even if she ______ the last woman on earth.

It’s high time that we ___our work and _____ supper now.

If you                        the medicine, you                            better now.

Each of the students in our class　　　　great interest in English and we each　　　　a copy of A New English-Chinese Dictionary.