According to scientists, our mental abilities begin to____ from the age of 27 after reaching the highest level at 22.
.---Did your father come back early last night?---Yes. It was not yet eight o’clock ______ he arrived home.
.On stepping into the room this morning I was astonished to find the floor covered with______ looked like tiny insects.
.She didn’t recognize the man who hit her because she could only ______a dark shape moving towards her.
.Mr. Li_____a secretary for five years in the company, and now he is the general manager of it.
.West of our school lies our stadium, ___________ about 5000 people in all.