【答案】We will have to cancel the baseball match _______the weather improves.

We will have to cancel the baseball match _______the weather improves.

A. unless B. because C. as soon as D. if

【答案】

A

【解析】

句意：如果天气没有好转，我们将不得不取消这次棒球比赛。unless除非；because因为；as soon as一……就……；if如果。结合句意，如果没有天气好转的这个条件，棒球比赛将被取消，故用连词unless，故选A。