How is the weather in winter in Bejing?—It’s ________.

Lily,______ do you study for a math best? —By asking my teacher for help.

. — What’re you going to do to protect the environment? — Plant trees on side of the river.

I prefer speaking to listening in English learning.—Oh, really! I think you should be good at _____of them.

______ girl in red is ______ friend of Mary’s．