-----What is the noise?
-----Oh, I forgot to tell you. The new machine _________.
A．was testedB．will be testedC．is being testedD．has been tested
C
根據(jù)-What is the noise，可知是現(xiàn)在正在進行的動作，所以新機器應(yīng)是正在被測試。用現(xiàn)在進行時態(tài)的被動語態(tài)。
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