Question

【題目】A German company has developed a rapid test. (改為被動(dòng)語態(tài))

A rapid test __________ __________ developed by a German company.

Answer 1

【答案】has been

【解析】

句意：一個(gè)德國公司已經(jīng)開發(fā)了一個(gè)快速的測試。

根據(jù)has developed可知是現(xiàn)在完成時(shí)態(tài)；a rapid test做主語，是單數(shù)名詞，謂語動(dòng)詞用第三人稱單數(shù)形式；謂語動(dòng)詞變成被動(dòng)形式has been developed。故答案為has been。