________ hard, and you will be ________.
A.To study; best B.Study; best C.Studying; the best D.Study; the best
We saw ________ birds when we were climbing the mountain in my home town.
A.million of B.millions of C.millions D.million
—Is that cap Bob’s?
—No, it ________ be his. His is blue.
A.can’t B.mustn’t C.needn’t D.may not
The classroom is ________ small ________ hold (容纳) so many students.
A.enough; to B.so; that C.such; to D.too; to
—I called you yesterday afternoon, but nobody answered. Where were you?
—I ________ football the whole afternoon.
A.play B.will play C.was playing D.am playing
—Do you often write ________ your parents?
—No. I often talk with them ________ the phone.
A.to; in B.for; on C.to; on D.for; in
