It was _____ he came bank from Africa that wear _________ he met the girl he would like to marry.

He is only too ready to help others, seldom, ____, refusing them when they turn to him.

Among the crises that face humans ________ the lack of natural resources.

At no time      the rules of the game.It was unfair to punish them.

Not until he went through real hardship _____the love we have for our families is important.

Anyone, once ____ positive for H7N9 flu virus, will receive free medical treatment from our government.

Not once ________ to Michael that he could one day become a top student in his class.

Only when he apologizes for his rudeness ____to him again.

“Never for a second,” the boy says, “______ that my father would come to my rescue.”

Only By increasing the numBer of doctors By 50 percent    properly in this hospital.