This machine is very easy      . Anybody can learn to use it in a few minutes.
#94917
A
operating
B
to be operating
C
operated
D
to operate
推荐题目
--Did Peter repair his bike?--He _______, because he could’t do that himself.
#91550
A
had it repaired
B
had it to repair
C
had it repairing
D
had repaired it
He likes books ________ science because he wonders what and why our world is.
#96368
A
relating to
B
related to
C
connecting to
D
connected to