Jack was soon told ________ he didwas not necessary

His mother gets up at 6：00 a. m. every day. She is used to ____ early to make breakfast for the family.

It was _________that Miss Wang had been to California and there she met Dr. White __________, who became her husband later.

My brother spent all morning_____ soccer with his classmates.

Pollution is a serious problem. Scientists have _____ some good ways to save it.