-- I saw Tom in the bookstore just now.
-- No, it ______ him. He moved to the USA last month.
A. mustn’t be B. may not be C. can’t be
-- Sara, you are late!
-- Sorry, I ______ do that next time.
A. don’t B. won’t C. haven’t
_______ plastic bags we use,_______ it will be to our environment.
A. The less; the better
B. The fewer; the better
C. The fewer, the worse
Moyan got the Nobel Prize in his _________.
A. fifties B. fifty C. fiftieth
Jackfound______interesting______ the song Gangnam Style.
A．it,singing B.it,tosing C.that,tosing