单选题：It is obvious that people hold different opinions about ____..

Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.A．shouldn't eatB．mustn't have eatenC．mustn't eatD．shouldn't have eaten

A hot balloon blew up in Egypt. There ________ something wrong with the quality of it.A．may have beenB．must beC．need have beenD．might be

—Is it necessary to look up every new word when I come across it in reading?—No. You ________， because you are likely to guess the meaning from the context.A．can'tB．mustn't C．don't have to D．ought not to

The boys are still playing basketball happily on the court _____ it is raining heavily.A. in case B. even though C. as if D. as long as

How _________the wonderful music on the TV _________to me!A. relaxed; soundsB. relaxing; is soundingC. relaxing; soundsD. relaxed; sound