If you keep on, you'll succeed __________.
I told Mom that not everyone could manage to have 3 meals on time everyday, ________?
No sooner ________ down on bed ________ the telephone rang.
Honey, you ________ alcohol for they have stopped drinking.
—What courses are you going to learn next term?—I don't know.But it's about time ________ on something.
The little child ________ go out alone at night, so he ________ walk in the dark that night.