- What's wrong with you, Madam? - I've lost my valuable painting. But a week had gone by _______ I knew it was missing.
#55958
A
while
B
since
C
until
D
before
推荐题目
When we write our homework on the computer, we should  _____ first.
#55940
A
save the document
B
print our homework
C
open a new document
D
turn off the computer
I don’t like science _______ it’s difficult.
#55838
A
but
B
so
C
because
D
and
__________ I like French very much, __________ I study it very hard.
#56756
A
Because; so
B
So; because
C
Because; /
D
So; /