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Youcan’timaginewhatdifficultyIhad

練習題8.83K

問題詳情:

Youcan’timaginewhatdifficultyIhad

You can’t imagine what difficulty I had ______ the problem.

A. working out    B. work out

C. to work out    D. worked out

【回答】

A

知識點:非謂語動詞

題型:選擇題

標籤:Youcan