－Are you sure you have to? It’s been so late. Make it another time?－I don’t know ________ I can do it if not now.
#31948
A
how
B
what
C
when
D
that
推荐题目
he thought he was helping us with the work, he was actually in the way.
#79722
A
Although
B
Unless
C
Because
D
When
It is known to all that ____ you exercise regularly, you won’t stay healthy.
#31547
A
because
B
unless
C
now that
D
in case
He always brings me a pretty gift _______ he comes to visit me.
#31639
A
by the time
B
sometimes
C
every time
D
at times