What are you doing at the moment? —I am ______ my turn to borrow books.

How many teachers are there in your school?—About two _________.

What would you do, _____ if you saw someone stealing? [ ]

Mr. Wang is going to meet Kitty and _____ at the school gate tomorrow morning.

I think trees ____________ twice a week in such hot weather.—Yes, I agree. Or they may die without water.