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
 In order to finish the project , we need ___________ money .
#63973
A
the large number of
B
a large sum of
C
a great many
D
a number of
The teacher said that light ___ faster than sound.
#80957
A
travelled
B
had travelled
C
travels
D
were travelling