Don’t let ____ in. I’m too busy to see ____.

st African-American president of the United States received a _______welcome in the African countries, where he was received as a returning son.

He is a very hard-working student.— ________. As far as I know, he often burns the midnight oil.

account can parents always _______ with thechildren, otherwise they will become more greedy and come up with moreunreasonable requests.

This kind of cup _______ of paper.