用所给单词的适当形式填空。．
小题1: —________ your father __________(fly) abroad yet?
—Yes, he has been in Singapore for a week.
小题2:Niushou Hill is an area of natural ______________ (beautiful) .
小题3:The men were clearing all the _____________(pollute) from the lake.
小题4:Xuzhou is one of the __________(north) cities in Jiangsu.
小题5:My brother__________(buy) some storybooks foe me just now. I like them very much.
小题6:The boy couldn’t stop ___________(laugh) after he heard the jokes.
小题7:Let’s use the computer __________(help) us do the homework..
小题8:This is the most interesting film I _______ ever________(see) in my life.
小题9:He spends as much time as he can ____________(learn) English every day.