.A smile costs _________, but gives so much. So we should learn to smile.A. something B. anything. nothing D. Everything
She was so angry at _____ he was doing _____she walked out without a word.
---Could you tell me _______yesterday? --- Because my bike was broken on my way here.
__regular exercise is very important, it’s not a good idea to exercise too close to bedtime.
It was a very long day for Jack. He didn’t get home from school ______ six o’clock.
Sorry, Madam. You’d better come tomorrow because it’s ________ the visiting hours.