Noise disturbance （ ） harmful in ChinaA：didn’t use to be considered B：usedn’t to considered C：didn’t used to consider D：aren’t used to consider
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Noisedisturbance（）harmfulinChinaA：didn’tusetobeconsideredB：usedn’ttoconsideredC：didn’tusedtoconsider
Noise disturbance （ ） harmful in ChinaA：didn’t use to be considered B：usedn’t to considered C：didn’t used to consider D：aren’t used to consider
Noise disturbance （ ） harmful in China
A：didn’t use to be considered
B：usedn’t to considered
C：didn’t used to consider
D：aren’t used to consider
Noise disturbance （ ） harmful in ChinaA：didn’t use to be considered B：usedn’t to considered C：didn’t used to consider D：aren’t used to consider
A.中国过去没有考虑到噪音的危害性.
used to do过去常常做...
didn't use to do过去不常常做...
be considered 考虑...
A：didn’t use to be considered