John had to start work at an early age, ____ his family was very poor.
#56957
A
or
B
so
C
but
D
because
推荐题目
The art club is for members only. You can’t go in _________ you are a member.
#57977
A
unless
B
because
C
if
D
though
--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy,
#58506
A
If
B
Until
C
Unless
D
Before
