Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.

Now parents feel they can’t help______reading stories suitable for their children, so sometimes they can’t help but______ to experts for advice.

 Officials believe that more than one person _____ for the big fire.

I can’t thank you _____ much for your kindness because without your help I wouldn’t have won the big prize in the speech contest.

---_________ she can’t find her keys? She’ll be locked out all night.---You are right. I’d better call her to check if she’s OK.