【題目】When asked to explain __________ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.

A. what was it that

B. that what it was

C. what it was that

D. what was it

【答案】C

【解析】句意:當(dāng)被要求解釋他到底用什么辦法使得學(xué)生如此著迷于他的課，老師停下來(lái)陷人沉思。explain為及物動(dòng)詞，后跟由強(qiáng)調(diào)句式構(gòu)成的賓語(yǔ)從句，用陳述句語(yǔ)氣。選C。

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