The robot Tony was said        already in Larry’s house before he returned.

A．to test out B．to have been tested out
C．to be tested outD．to be testing out

B

解析試題分析：考查句型：sb/sth is said to do/to have done,如果是將要做，用不定式一般式to do如果是已經(jīng)做了，用不定式的完成式，句意：據(jù)說機(jī)器人Tony在回來前已經(jīng)在Larry的家里做過實驗。Tony和test out是被動關(guān)系，用不定式完成式的被動。選C。
考點：考查固定句型
點評：固定句型是學(xué)習(xí)語言的重要環(huán)節(jié)。sb/sth is said to do/to have done,可以轉(zhuǎn)化成It is said that句型，解答這類題目，關(guān)鍵是理解題干意思從而判斷是動詞不定式的什么形式，根據(jù)意思放入句子中進(jìn)行比較，不難選出正確答案。

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