—Will you buy the red T-shirt or the black one?—I will buy ______ of them. One is for my brother and the other is for my father.
Do they work _____ the day time or _____ night?
Lily had left ______ the time we arrived.
He arrived _______ Shanghai _______ the morning of January 5.
Jack was about to lock the door when he just _____ time he remember his key.
Don’t write the letters ______ pencil but ______ ink.