Four ______them are Americans A of B to C about Dfrom

Four ______them are Americans A of B to C about Dfrom They are four ( )(公共汽车). 快**********The windows are so bright,who ______them?_______上应该填have cleaned has cleaned还是cleaned?请讲出为什么 There are four words.翻译 What are the four boys? Are you in grade four? Four plus three are seven. what are the four critisisms there are four seasons in a year.用four提问 there are four season in the year. four画线提问 There are four apples in the box.对four提问 there are four room in my house 对four提问 We are in Team Four.对Team Four提问 We are in Team Four.对Four提问 ------classes are there in Grade Four?Four.填空 There are four stickers in my book对four提问 every four和once four的区别the games are hold __years为什么是once four people are four前面填什么啊