Question

When first __________ to the market, the computer software was not a success due to its complex...

When first __________ to the market, the computer software was not a success due to its complexity in operation. A．introducing B．being introduced C．introduced D．to be introduced

Answer 1

C

本题考查非谓语动词。句中逻辑主语为the computer software，与introduce的关系为被动关系，故用过去分词，选C。