____________________out
18Weclea
theclassroomeverydayTheclassroom__________________everyday
19Youmust
otpla
ttreesi
verydryearthTrees______________________________________i
verydryearth
20Youca
digaholei
theearthAHole_____________________________i
theearth
f答案
15BACA610ACCCD
1115DCBDC1620BBABC
2125CBBAA2630DDBDC
3132DD
二、将下列句子变为被动语态，每空一词：
1ca
befi
ished2isproduced
3willbesu
g
5wasse
tto
6isused
7wasmadetodo
9Wasbuilt
10willbeput11areboughtby
13bewatered
14areused
15weremadetowork
17havebee
sold18areclea
ed19must
otbepla
ted
4
eed
’tbedo
e8hasbee
give
12isofte
me
ded16Wasbroke
byhim20ca
bedug
fr