The light from the sun moves away from its source in all directions, so its strength is very （) .
A. broken out
B. spread out
C. looked out
D. figured out
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— I need to speak to Mr.Tucker.This is a very urgent matter.— （) .
A. Just a minute.Sorry, it is not ready yet.
B. what's the problem？
C. please, I will be waiting.
The atoms of certain substance are excited in such a way （) they produce coherent light.
A. which
B. who
C. that
D. what
—Sorry, sir, it's not ready yet. — （) .
A. Please do.I'll be waiting.
B. Ok, hold on, please.
C. Not yet？ Is there some problem？
—Hello, Mr.Snyder.What can I do for you？ — （) .
A. My car sounds like a motorboat at full speed.
B. It looks as if you need a new radio.
C. We'll take a closer look, and get back to you later today.
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