--- Have you solved your problem?---I've kept on thinking about that matter ______, but I have no idea yet now.
#43153
A
at times
B
some time
C
at a time
D
all the time
推荐题目
I hear they are going to London, but I don’t know ________ they will stay there.
#35874
A
how soon
B
how often
C
how long
D
how fast
In this exam, you’re asked to write a composition of about ________.
#42777
A
90-words
B
90-word
C
90 words
D
90 word’s