I fell down and broke three of my teethI wonder how many times I have to come here and get my false teeth [ ]

Would you like to go shopping with me-_______. But I have a lot of work to do.

I want to go to Beijing by _______train, but my sister wants to take ______ plane.

5．—Do you feel Professor Wu’s speech on finance easy to understand?—Just the opposite. It’s _______ for me.

ing to common practice, the president _________hold office for five years.