—Haveyoufinishedthework?—Notyet,butnomatterhowharditis,...

問題詳情：

—Have you finished the work?

—Not yet, but no matter how hard it is, we'll keep ________ until we make it.

A. failed    B. trying     C. tried     D. failing

【回答】

B

知識點：動詞和動詞短語

題型：選擇題