In his book,he explains both ______ it means to be a scientist and ______ science works.

Does your father like baseball?-Yes，but________watching baseball games alone.[ ]

Next week Iwill go to a job interviewWill you give me somesuggestions—Smiling is a great way to make yourself

In the cross-lake swimming race, a boat will be ____in case of an emergency.

I also told them if they wanted a copy of my book ____ my office. I would be happy to send one to them.[ ]