【題目】—what is that terrible noise? It nearly drives me mad.

—Oh, your dad with his workmates__________ (test) the machine over there.

【答案】is testing

【解析】

句意:——那可怕的聲音是什么?它幾乎要把我逼瘋了。——哦,你爸爸和他的同事在那邊測(cè)試機(jī)器。

test v. 試驗(yàn),測(cè)試。觀察句子,這里缺少的是謂語(yǔ)部分,結(jié)合語(yǔ)境表達(dá)的是正在發(fā)生的事情,應(yīng)該用現(xiàn)在進(jìn)行時(shí)(be + v.ing),這里主語(yǔ)是your dad,是三單形式,那么be動(dòng)詞用is,故答案為is testing。

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