几道英语题（非谓语动词）
1.What's your problem?I have troble( )these words.A.copy B.copying C.to copy D.copies2.You'd better( )upstairs and tell the children( )make so much noiseA.go ;not to B.go;don't C.to go;not go D.to go;don't3.Though he had often made his sister( ),today he was made( )by his sister.A.cry;crying B.crying;crying C.cry; to cry D.to cry;cry4.Would you mind( )the window,please?It's cold.A.to close B.closing C.closed D.close请写下答案和方法,怎么判断选不定式或动名词还是分词.