Haven’t I told you that the computer needs _____?— Sorry, I forgot _____ it fixed. I’ll send it for repair right away. [ ]

John is very __________ －if he promises to do something he’ll do it

As good students, we can _____ break the school rules.

下列各句中，没有语病的一句是 （ ）

Mary had a traffic accident and has been sent to the hospital. Did you tell her boss about it? — Yes, but I _____ her husband first.