题目内容
—Mum, will our trip be cancelled?
—No, we won’t put it off________there is a natural disaster.
A.if B.whether C.unless D.when
练习册系列答案
相关题目
题目内容
—Mum, will our trip be cancelled?
—No, we won’t put it off________there is a natural disaster.
A.if B.whether C.unless D.when