Tom was about to close the window ___ his attention was caught by a bird.
#92992
A
when
B
if
C
and
D
till
推荐题目
 _____ at the door before you come into the room.
#94211
A
Hit
B
Knock
C
Touch
D
Strike
______ a pair of compasses, it is easy to describe a circle.
#93189
A
Having
B
To have had
C
If you have
D
If having
There is no doubt ______ he did is good for us.
#92726
A
that what
B
what that
C
that
D
what
It is said that our body _______ 206 bones; if one of _____ is broken, it will cause inconvenience of some kind. 
#93812
A
makes up of; them
B
is made up of; them
C
is made up of; which
D
makes up; which