Happy ____ (Mother's/ Mother)Day.
Cairo is one of the biggest and busiest ____ (city) in Egypt.
算一算,有____ 把椅子。
同我国隔海相望的国家从北到南依次是( )
有一艘满载货物的货轮远洋归来,在纽约港靠岸了。卸货工人说货物都是农产品。请你猜一猜这批货物最有可能是 ( )