问题

You’ll fail the test______ you work hard.
A:if
B:since
C:unless
D:when;
B:since
C:unless
D:when;
正确答案是:
同类题型
I had hoped to take a holiday this year but I wasn’table to ______.
You will know how cool it is to achieve your dream ______ your own hard work.
I think yourfather is very busy.–So he is._______he still takes a walk with us sometimes.
Could you please tell me ________—Of course. Many people in Wuwei know it.
The old man sitting opposite me cleared his throat as if________something.[ ]