I don’t know why you’re always worrying about it. ___, you have nothing to do with it.
----- Have you ______ some new ideas? ------ Yeah.I’ll tell you later.
Leave your key with a neighbor ______you lock yourself out one day.
A new_____ bus service to Tianjin Airport started to operate two months ago.
----Do yon have a minute? I’ ve got something to tell you. -----0K.______you make it short.
Scientists are convinced--- the positive effect of laughter___ physical and mental health.