It is not polite to make ______ those who ______ in trouble.

Thank you for your ______. I know a lot about Oxfam now.

Frank insisted that he was not asleep I had great difficulty in waking him up

What do you think of the students ofMeiling Middle School?—They study _____ harder than before.[]

_____ by his wisdom and humor at their first meeting, the chairman immediately invited him to attend the coming Science conference [ ]