應該選B.
這是一句狀語省略句.從句中的主語即是主句中的"these products".因為products與introduce之間是被動的關系,即"產(chǎn)品是被介紹/推薦"的.因此是用被動形式"introduced".
整句話的翻譯是:當這些產(chǎn)品被首次推向市場時,就取得了很大成功.
when first _______to the market ,these products enjoyed great success.
when first _______to the market ,these products enjoyed great success.
A:introducing B:introduced
C:introduce D:being introduced
A:introducing B:introduced
C:introduce D:being introduced
英語人氣:598 ℃時間:2019-09-27 08:17:32
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