If his parents are convinced ______ the fact that his son always focuses his mind _______his study.
#28556
A
of; on
B
of; at
C
by; to
D
on; at
推荐题目
Mr.Morgan can be very sad＿＿，though in public he is extremely cheerful．
#28185
A
by himself
B
in person
C
in private
D
as individual
I_____to go for a walk,but someone called and I couldn’t get away.
#28180
A
was planning
B
planned
C
had planned
D
would plan
We have _______ books in our library.
#27714
A
plenty of
B
great many
C
a great deal of
D
great number of