By the way, how many of us can attend the meeting? —The number of the students to attend the meeting _____ fifty.

Why are you so __________ ? —- How _______ the news for them!

_____ do you write to your parents?—Once a month.[ ]

Distinguished guests and friends . _____the ceremony of the 50th Anniversary this morning are our alumni (校友) from home and abroad .

I asked them several questions _____ their family members. [ ]