Question

- Has your friend completed his design?   - Not yet. He ________ on it last night.

A．worked

B．has worked

C．is working

D．was working

Answer 1

D

解析試題分析：句意：—你的朋友完成了他的設(shè)計(jì)了嗎？—還沒(méi)有。昨晚他一直在做。A. worked一般過(guò)去時(shí)，說(shuō)明過(guò)去的情況，與現(xiàn)在無(wú)關(guān)；B. has worked現(xiàn)在完成時(shí)，說(shuō)明現(xiàn)在已經(jīng)完成；C. is working現(xiàn)在進(jìn)行時(shí)，表示現(xiàn)在正在做的事；D. was working過(guò)去進(jìn)行時(shí)，表示過(guò)去某個(gè)時(shí)間或時(shí)間段內(nèi)正在做的事。分析句意可知用過(guò)去進(jìn)行時(shí)。故選D。
考點(diǎn)：考查動(dòng)詞時(shí)態(tài)的用法。