They were busy ________ an experiment when I came.
#92445
A
doing
B
to be doing
C
with doing
D
to do
推荐题目
—My grandma decides to _______ her company to me after she is retired.—You must be under great pressure.
#97081
A
take over
B
hand over
C
go over
D
run over
We are going to talk about the problem _____ at the last meeting.
#94415
A
discussed
B
discussing
C
to discuss
D
being discussed
Master Fred chose a sunny sloping bank with a thick growth of bushes, and ________ there a nice little hen-house.
#96293
A
covered, fixing
B
covering, fixing
C
being covered, fixed
D
covered, fixed
Jack liked the milk so much that he had it ____to his house every week.
#90452
A
deliver
B
to deliver
C
delivered
D
delivering