---How about going out for a walk with us? ---I wish I could, I have to finish my homework first.
#57090
A
so
B
and
C
but
D
or
推荐题目
The earth will become worse and worse ________ we do something to stop her from being polluted.
#55977
A
if
B
even if
C
when
D
unless
Good to see you again It's almost three years_____ we met last time
#55585
A
until
B
before
C
while
D
since
— I hear the famous singer Xu Song may come to Weifang next month.— Really? _______ he comes, my younger sister will be very excited.
#57609
A
If
B
Until
C
Unless
D
Before
-When shall we go to the museum, this afternoon or tomorrow morning? -_____ is OK. I’m free these days.
#58586
A
Both
B
All
C
Either
D
Neither
I really enjoyed your lecture, ______ there were some parts I didn’t quite understand.
#58361
A
because
B
unless
C
though
D
after