Three trees can do the job of 15air-conditioners _________ almost all day.
#48595
A
run
B
are running
C
ran
D
running
推荐题目
---Did you use to ____ a bus to school?---Yes .But now I am used to ____ a bike to school .
#49832
A
take , riding
B
taking , riding
C
taking , ride
D
taking . riding
Sarah always makes her son _______ his hands before eating. 
#48840
A
wash
B
washing
C
to wash
D
washes
— It’s a fine day today. How about __________?  — Sounds great!
#51200
A
go hiking
B
go to hike
C
going hiking
D
to go to hike
Can you come to my house ______the science report? 
#48769
A
discuss
B
to talk
C
to discuss
D
discuss about