You never know how much difficulty we had ___the problem.Luckily, we managed to solve it with his help.
—Let’s have a party this Sunday. —_______. We’ll have a good time.
—Please _______ at the picture. What can you _______ in it? —A guitar and a hat.
_______ the boy doesn’t do sports every day, he is fat.
My uncle is John Smith. We can call(称呼)him _______.
—Peter’s father is a _______ math teacher. —I think so. He teaches _______.