Dabout it.—Why worry Increased responsibility can______ your best qualities.

Nobody wanted to matters for him though everyone knew that he was blameless.

I wonder＿＿＿ like to be an astronaut(宇航员).—I don’t know, but I imagine it’s exciting.

A person who has never tasted bitter won’t know ______ sweet is.

No one was prepared for the teacher’s questions.—We________read the lesson yesterday evening.[ ]