Question

He was driving a lorry load of bananas ____he came off the road at a bend and fell into the valley.

A．since

B．until

C．when

D．while

Answer 1

C

考查連詞。A. 自從……以來  B. 直到 C.當(dāng)……時(shí)，動(dòng)作有先后  D. 當(dāng)……時(shí)，一邊……一邊……，強(qiáng)調(diào)兩個(gè)動(dòng)作同時(shí)發(fā)生。句意：當(dāng)他脫離公路墜落山谷時(shí)，他正在開著一輛裝了香蕉的卡車。故選C。