I have something important to do, so I can’t go to the meeting. Please ask John to go _____.

____ students are there in your class?— Forty-one. [ ]

I my homework at home this morning.

They have built another new library for the students—About_____ of the books in their library are written in English．

Mom, these are my friend Peter and __ brother Bill.–Welcome to our home. Come in, please.