2. 外语
  3. When first ______ to the market, the toys didn’t attract much attention.

When first ______ to the market, the toys didn’t attract much attention.

admin2014-08-25  47
问题 When first ______ to the market, the toys didn’t attract much attention.
选项 A、introducing
B、introduced
C、was introduced
D、being introduced
答案B
解析 由于前后两个分句的主语是一致的，而且toys与动作introduce构成动宾关系，故用过去分词表被动。根据题意选B。
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