Oliver still bought some goldfish ________he found it difficult to raise them.
#58215
A
because
B
since
C
though
D
until
推荐题目
____he is tired ,_____he doesn’t stop working.
#57064
A
Though ; /
B
But; though
C
though; but
D
/ ;/
Don’t stop working _____ twelve. 
#58157
A
to
B
at
C
when
D
until