Question

Come and join us,Jimmy! I'm sorry, but I'm really busy now.If I( )time,I would certainly go

Come and join us,Jimmy! I'm sorry, but I'm really busy now.If I( )time,I would certainly go
A will have
B have had
C had
D have
选哪个为什么，懂的人回答

Answer 1

C
来和我们一起玩儿吧，吉米！
对不起，但是我现在真的很忙，如果我有空，我肯定去。

说明他现在不可能有空，这只是一种假设，是虚拟语气，动词要用过去时。