We won't know whether it will be successful. We won't know whether there will be good _____.
—Do you think we can get there on time? —Yes,_______ the truck doesn’t break down.
The children were playing games on the playground, ________ school uniforms.
It is written clearly in the requirements that all passengers ______ check onto board 30 minutes before the plane takes off.
—I failed again. I wish I _________ harder. —But you _________.
Drunk driving used to occur _______, but now it is under control.