---What is your best friend like?---He is ______. He helped us work out the most difficult math problem last week.
They’ll get home _____ two hours.
Our teacher told us that _____.
I don’t want _____ of the shirts. Please show me _____.
_____ little water is not enough for _____ many people.
---I called you yesterday evening, but there was no answer. ---Oh, I am sorry I _____dinner at my friend’s house.