193. What they need at present _______science and technology.

Who would you rather _____ the room? Jim, of course.[ ]

This is really ugly bird.—But it is useful bird. It can help fishermen catch fish.

Liu Tao has never read the book The Adventure of Tom Sawyer , _________ he— _________. He told me it’s very interesting. He’d like to read it again.

Someone is knocking at the door. It mysister. It’s time for her to be back.