Mr. Smith is busy these days ________ a new book on how to develop a child’s reading skill.
#96734
A
working out
B
working on
C
working for
D
working with
推荐题目
No matter what I do, my efforts ________always end in failure.
#93488
A
lose weight
B
to lose weight
C
losing weight
D
lost weight
She was disappointed to find her suggestion _________. 
#93157
A
turning down
B
to be turned down
C
turned down
D
to turn down
I felt it a great honour ______ to speak to you.
#98443
A
to ask
B
asking
C
to be asked
D
having asked
He attended the party without _______________.
#98109
A
invited
B
inviting
C
having invited
D
being invited