单词辨音 在A、B、C、D四个选项中，选出划线部分读音与其余三个不同的选项，
并将该选项填入答题卷上相应的空格内。（本大题共5分，每小题0.5分）
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There goes the bell. Hurry up, _______you’ll be late for class.
| A．and | B．or | C．so | D．but |
We haven’t decided _______ we’ll go to Shanghai next week.
| A．where | B．when | C．why | D．how |
My friend Li Xiao knows my hometown very well because he _______ there many times with me.
| A．has been | B．has gone | C．had gone | D．went |
. Mary spends a lot of money on clothes _______ her family is not rich.
| A．because | B．though | C．if | D．so |
—Shall we go out for a walk?
—Sorry, I can’t. I _______ my homework.
| A．do | B．did | C．am doing | D．was doing |