—What do you think of Liu Huan?
—Oh, he is my favorite singer. I think no one can sing________.
A. good B. well C. better D. best
Everybody should remember it is not _________ to swim in the river alone．
A．healthy B. safe C．possible D．comfortable
Some students are so ______ that they often make mistakes in their homework.
A. careful B. serious C. careless D. successful
It’s about 5 away from here to the mountain.
A. hundred meters B. hundreds meter
C. hundreds meters D. hundred meter
—Which do you like , summer or winter?
—I prefer summer.
A. good B. well C. better D. best
— Where is Lin Tao? — He _____ to the teachers’ office. He will be back soon.
A. go B. has gone C. has been D. went
