—What'sthatterriblenoise,David?—Oh,Iforgottotellyou.The...

問題詳情：

—What's that terrible noise, David?

—Oh, I forgot to tell you. The new machines in the nearby plant ________.

A． were tested            B． will be tested

C． are being tested         D． have been tested

【回答】

C

知識點：動詞時態與語態

題型：選擇題