Must I feed the goldfish now? — No, you ______. But you must do it before supper.

You’d better sing. It doesn’t _____ whether you can sing well or not.[ ]

What do you think of the four classics (名著)of China?－I hear that they are wonderful, but I’ve read _______ of them.

Dave, is this your English textbook? —No, it isn’t mine. Maybe it’s _______.

Shenzhen is a beautiful city. — Yes. You can see a lot of flowers and trees on ________ of the streets .