He _____the problem _____in his mind for a whole week before he did anything about it.
#84044
A
switched; on
B
kicked; up
C
turned; over
D
took; on
推荐题目
The actress who had been thought highly of to be a great disappointment.
#82973
A
turned down
B
turning in
C
turned out
D
turning up
Electric trains have now ______ steam ones in most countries in the world.
#75066
A
took the place of
B
in place of
C
taken the place of
D
instead of
Mike was ___ praised for his handwriting by the teacher in class.
#80596
A
high
B
highly
C
deep
D
seriously
Some blood types are quite common，others are regionally______，and still others are rare everywhere.
#82483
A
distributed
B
contributed
C
obtained
D
convinced