---Do you work here?---No, I_______ the manager until the secretary comes back.A.will help B help C. helped D. am helping
——I’m terribly sorry for being late. ——________. Come over and sit down.
I can't believe what he says because he is _______ changing his mind. .
Linda had her luggage________ an hour before her plane left.
Could you drive me to the bookstore at noon if________?
In my opinion, it's the flying birds rather than the pilot that________for the air crash.