问题
选择题
—Tomorrow ____ my birthday. I’d like you and Jane to come.
—I’m not sure if she ____ free.
A.will be; is
B.is going to; is
C.is; is
D.is; will be
答案
D
第一空是表示“不以人的意志为转移的客观事实”,用一般现在时;第二空是表示“将来的动作”,用一般将来时。