13.By the end of last week,they __D__ the bridge.

题目

13.By the end of last week,they __D__ the bridge.
A.has completed B.completed C.will complete D.had completed
14.Ben hates playing __B___ violin,but he likes playing ____ football.
A.a…the B.the… the C./ …the D.the…/
15.By the time he was 4,he __B____ a lot of German words.
A.had learned B.has learned C.learned D.learns
16 .Jim turned off the lights and then ___B__ the classroom.
A.was left B.had left C.has left D.left
17.They _____C____ in Guangzhou since 2000.
A.lived B.had lived C.have lived D.were living
18.The train from Beijing____D___ ten minutes ago.
A.has arrived B.was arriving C.arrived D.had arrived
19.The students _____B____ their classroom when the visitors arrived.
A .have cleaned B.had cleaned C.was cleaned D.have been cleaned
20.Fergie____D___ the project in one hour.
A.have finished B.will finish C.finishes D.has finished
21.The man _____B___ his coat and went out.
A.put on B.had put on C.will put on

答案

13.正确.by the end of last week中用的是last week,所以要用过去完成时.14.错误.选D.西方乐器要在play后加the.足球篮球等体育运动,在play后不加the.15.错误.选A.解析类似于13题.其时间状语是过去的时态.by后加时间...