—Why don't you get a watch for your friend as a gift?
—But it's too expensive for me _______!
由于人口增长过快造成的问题是 ( )
扩句
①玻璃问世了。 ②噪音像 “隐身人”。
羽 ____ ____ ____ ____
争 ____ ____ ____ ____
次 ____ ____ ____ ____
既 ____ ____ ____ ____