语音：请选出每组中下划线字母发音不同的单词（共5小题；每小题1分，满分5分）。
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They were _____ to hear of the news of her father’s death.
| A． shocking | B． shocked |
| C． shock | D． a shock |
I’d rather the money went to a _______cause.
| A．valuable | B．rare | C．worthwhile | D．useful |
Parents need to teach their children how to behave______.
| A．in public | B．in company | C．in peace | D．in trouble |
Helen was fully occupied_____business matters, so we didn’t want to brother her.
| A．for | B．at | C．in | D．with |
-Sorry, do you mind if I smoke here?
-Yes,.
| A． |
you could |
B． |
go ahead |
C． |
I do |
D． |
my pleasure |