You are supposed to be more careful to make fewer while you are writing.

The teacher had intended not to tell the students but his remark _________the answer to the question.

Did Jack _____ having taken some books without telling anybody? — Yes, he did. He said he took three books. [ ]

We didn’t know his telephone number, otherwise we ________ him.

I don’t know if it tomorrow. If it ，we won’t go hiking.