If you swim in a river or lake, be sure to investigate is below the water surface. Often there are rocks or branched hidden in the water.
A. what B. who C. that D. whoever
Studies have shown that the right and left ear sound differently.
A. produce B. pronounce
C. process D. download
It was so noisy that we hear ourselves speak.
A. couldn’t B. shouldn’t
C. mustn’t D. needn’t
Have you ever heard of the trees that are homes animals both on land and sea?
A. about B. to C. with D. over
Jane’s grandmother had wanted to write children’s book for many years, but one thing or another always got in way.
A. a;不填 B. the;the C. 不填;the D. a;the
——Hi, John. Are you busy?
——
A. Yes.I do agree. B. Yes.That would be nice.
C. No.Are you sure? D. No.What’s up?
