My grandfather has been c___matchboxes for more than 20 year2.The singers have r____a lot of money for charity by singing3.The animals have been s____up food for winter these days.4.You should be p____if you want to ask others for help .5.You must be c____of fire,or you may get hurt
问题描述：
My grandfather has been c___matchboxes for more than 20 year
2.The singers have r____a lot of money for charity by singing
3.The animals have been s____up food for winter these days.
4.You should be p____if you want to ask others for help .
5.You must be c____of fire,or you may get hurt
答
第一个可能有点问题 这儿应该用的是现在完成时的被动语态
2 raised
3 不会
4polite
5careful
答
collecting
received
saving
polite
careful
答
collected
raised
supplied
polite
careful