– Have they found out the _____ of the fire?-- Yes. It was a cigarette end that _____ the fire.
Don’t trouble to see me ______ the door I know my way out.
The new secretary is supposed to report to the manager as soon as she _______.
A big crowd gathered _____ him ______.
The man and the horse _____ fell into the river were drowned.
The question is very important. It really needs _______.