Question

【題目】We have saved much time and money since the new machines ________ to our factory.

A.are broughtB.were broughtC.bringD.brought

Answer 1

【答案】B

【解析】

考查一般過去時(shí)的被動語態(tài)。句意為：自從這些新機(jī)器被帶到我們廠,我們節(jié)約了很多時(shí)間和成本。machines與bring是動賓關(guān)系,所以用被動語態(tài)；since引導(dǎo)的時(shí)間狀語從句,主句用現(xiàn)在完成時(shí),從句用一般過去時(shí)。故選B。