高二英语,求助!今晚就要!请大家解释一下为什么选择这个答案1）---Ifyouhavetimetonight,I'dliketoinviteyoutoaball.---That'sniceofyou,butareyou?A.freeB.carefulC.seriousD.true（答案为C,为何

Question

高二英语,求助!今晚就要!
请大家解释一下为什么选择这个答案
1）---If you have time tonight ,I'd like to invite you to a ball.
---That's nice of you,but are you________?
A.free B.careful C.serious D.true
（答案为C,为何不能选A）
2)I dropped in on Mrs Simth yesterday evening .she didn't look _______,but she insisted she was getting on all right.
A.as worried as ever B.as happy as usual
C.happier than usually D.as happily as usual
（答案为B,为何不能选C）

Answer 1

1.---如果你今晚有空的话,我希望能够邀请你一起去参加舞会.
----谢谢你,你是认真的吗?(女方可能有些受宠若惊)
所以选C.选A的话你可以发现,第一句话就是问对方有没有空,自己没空怎么会问对方有没有空?
2.我昨晚拜访了Mrs Smith.她看上去没有平常那么开心了,但是她坚持说她已经好起来了.C错是因为usually用法不对,如果是happier than usual就对了.