Learning to write is learning to think. You don’t know things clearly _______ you can write them down.
#56362
A
unless
B
if
C
since
D
whether
推荐题目
--___________has he been like this?--Ever since last week.
#58079
A
How long
B
How soon
C
How often
D
How much
—Why didn’t Betty come to school yesterday?—_________ she was ill.
#58530
A
But
B
Though
C
If
D
Because