when first ___to the market .the toys didn’t attract much attention.a.introducingb.introducedc.was introducedd.being introduced理由啊
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![when first ___to the market .the toys didn’t attract much attention.a.introducingb.introducedc.was introducedd.being introduced理由啊](/uploads/image/z/7448088-48-8.jpg?t=when+first+___to+the+market+.the+toys+didn%E2%80%99t+attract+much+attention.a.introducingb.introducedc.was+introducedd.being+introduced%E7%90%86%E7%94%B1%E5%95%8A)
when first ___to the market .the toys didn’t attract much attention.a.introducingb.introducedc.was introducedd.being introduced理由啊
when first ___to the market .the toys didn’t attract much attention.
a.introducing
b.introduced
c.was introduced
d.being introduced
理由啊
when first ___to the market .the toys didn’t attract much attention.a.introducingb.introducedc.was introducedd.being introduced理由啊
选 B
过去分词表示被动完成
B
B
过去分词做时间状语