Listen! There is a knock on the door. Who _____ it be?—It must be Jack. Just now I sent for him.

I don’t know if Aunt Li these“stay-home children”tomorrow morning.— If I her,I would come earlier.

The skirt looks different from others and it isnice.— Thanks. It ________ by my mother last month.

________ David be the new chairperson of the Students’ Union— He _______ be, but I’m not sure.

The money collected should be made good use _________the people in Sichuan Province who suffered a lot in the earthquake