Cycling is a good way of exercise and is quite easy _________. 
#93435
A
to do
B
to be done
C
doing
D
being done
推荐题目
I saw the boy _____ out a moment ago.
#98276
A
run
B
runs
C
how to run
D
running
When _________ by the reporter about his generous action, he said: “__________ others can always be joyful.”
#95802
A
being interviewed; Helping
B
interviewed; To help
C
having interviewed; Help
D
interviewing; Having helped