根据句意及首字母填单词

根据句意及首字母填单词1.The teacher was a____ in the room when I arrived.2.All this year's new m____ are at the car show.3.Columbus d____ America.4.Many people are worried about the pollution（污染）of the e____.5.He wanted to keep it s____ from his family.6.They've r____ bought a new car.7.Rice does not g____ in a cold climate.8.He's written s____ books about India.9.There is the earth,the sun,the moon and many other Stars in the u____.10.The maths problem is very difficult.It's b____ my ability.