The old scientist devoted most of his time ___________ the space science.

Let’s go fishing if it ______ this weekend.—But nobody knows if it _______.

Do you remember ____________ he came? — Yes, I do, he came by car.

We sell this sweater _____ $10.[ ]

Maybe there are some things among the girl’s papers, like her school reports, old photos and so on. Can you _________ them and give me whatever you find?