参照所给短语,用适当的词填空.1.a piece of paper→sixteen______of______ 2.a

1.a piece of paper→sixteen__oieces____of__paper____
2.a box of chalk→several__boxes___of__chalk____
3.a basket of eggs→many__baskets__of___eggs______
4.a bowl of rice→many___bowls___of____rice____
5.a bag of milk→hundreds of ___bags____of_milk