ISE:
1、Jeromeoftenreferredtoarthistorytextbookswhilehewassculpting;wheneverhelearnedanewmethodinartclass,heseeksouttheworkofsculptorswhohaduseditinthepast
Ato
Bwhilehe
Cseeksout
Dhadusedit这题主要不是很懂whenever的用法
IS:
2、Theshiftfromtraditionaltocosmeticdentistry[isbecauseadultsaregettingfewercavitiesandbecomingmorevain]
Aisbecauseadultsaregettingfewercavitiesandbecoming
Disoccurringbecauseadultsaregettingfewercavitiesandbecoming
不是很明白A和D的不同
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