—I'm leaving for the doctor's this afternoon. —OK, but make sure __________ when you leave.
I was about to sail away ______ I heard the sound of stamping and singing on the bank,
Personally, it is no good ________ online all day long. It is really a waste of time.
Living on his own and only having a dog _____ company, the old man feels ______.
______ you make a promise, you should keep it.
My parents insisted that I _____ medicine instead of law.