题目内容：

急用 ,
6． He suddenlyremembered that his school bag ________ at home.
A.has been forgotten B.had been forgotten
C.has been left D.had been left
7． The bell ________the end of class rang,interrupting our heated discussion.
A.indicating B.indicates C.indicate D.indicated
13.Here are some toys.You can ______ one or two for yourlittle son as a birthday gift from me.
A.make out B.pick out C.work out D.take out
14.Hardly had he finished his speech _________ the audiencestarted cheering.
A.when B.and C.than D.as
15.Students are expected to __________ their classesregularly.
A.present B.perform C.attend D.follow
16.Billy never dreams of _________ for him to travel abroad.
A.there to bechance B.there being a chance
C.there is achance D.being a chance
17.The twin brothers were so much alike that even their ownparents ________ one ________ the other sometimes.
A.mistook … for B.longed … for C.took … over D.named … after
18.When she heard that her husband had died in an accident,she broke into ______.
A.cry B.shock C.pain D.tears
19.For my part,I have not the slightest doubt ________ he isan honest man.
A.if B.that C.whether D.what
20.They found a dying old man _______ on the ground when thedoor was broken open.
A.laid B.lied C.lying D.lain