With the (develop)of science and technology,life is becoming much easier.
The size of our school is (two) bigger than theirs.
Sandy borrowed the novel from the library last week and (keep) it for 5 days.
The more an eraser is used, the (small) it gets.
It's noisy outside.I can't hear you (clear)
Every year many foreign (tour) come to visit the Great Wall of China.