问题补充:
— Linda, shall we go and watch the Flower Festival Party in April?
— we have the tickets.
A. If
B. Unless
C. Because
D. Since
答案:
A. If
(答案→)B. Unless
C. Because
D. Since
解析:A. If 假如B. Unless 除非,只要 C. Because 因为 D. Since自从;句意:琳达,四月份,让我们去看花卉展览吧。只要我们有门票。故选B