Look!They___(swim)in the river

Look!They___(swim)in the river tom and mike always _____(swim) in the river.they___(swim)in the swimming pool this sunday.写清为什么 用所给单词的适当形式填空.（1).Look at those____(child).They___(swim)in the swimming pool.（2）.What language___your sister___(learn) next year?(3).Can I___(take) a message for ___(he)? Look!They___(swim) Shall we___(play)football now I can___(ride)a blke Let___(we)go and see Look,he_____( swim )in the lake. look!the ducks are_____(swim)in the water急 Look!A girl is ___(swim)in the river. Look!Jim is ____ in the river now.(swim) Look,the boy ______ (swim) in the river. Look!The kis ______（swim)in the river. look he s ＿（swim）in the lake look they're having fun ----( swim) in the river?为什么要填swimming 而不是to swim? People___(stand)in line.They___(hurry) home. Look!They ________ in the river．A. swim B. are swimming C. are swiming D. to swim what about------（swim）in the pool?look,she is swimming in the pool Look!It says,“ (not swim) in the river.It’s dangerous!” 答案是don’t swim,为什么?我觉得应是Don’t swim Look!There are some old people ___(swim)in the sea.填空详解谢谢 Look!The students ____ [swim]at the pool.Listen!Who ____ [sing]in the room?