【题目】The world's population is increasing_________80 million every year.

【题目】—I'm interested in traveling. — _________.

【题目】—Don't _____hope. Everything will be over soon.

【题目】We must_________the policy to control the heavy traffic in the city.

【题目】Doctor Li, is there anything wrong with my eyes?— No,_________is OK.

【题目】— Have you ever been to Beijing?:Yes, last month I_________there.

【题目】________ I still make lots of mistakes, it doesn’t worry me as it used to be.

【题目】I ________ much better at speaking English since I started junior high school.

【题目】The farmers usually use___ to cut the wool off the sheep．

【题目】________ September 11, 2001, I arrived at my building on time as usual.