look they're having fun ----( swim) in the river?为什么要填swimming 而不是to swim?

look they're having fun ----( swim) in the river?为什么要填swimming 而不是to swim? They're new students.Please look after ( ). Look at the cucumbers.They’re fresh. Look at the birds!They're flying! look there theyre in the It's a sunny day.The studens are having a good time.They're going on a field trip.Look!Chen Jie is They're having a football match this evening.改错! they're having a meeting at the meeting h_________ They‘re having an English class（改为一般疑问句） having,now,lesson,english,They;re,an 连成一句是? they‘re having fun.改为以般疑问句 They're having classes. 是什么意思?急急急急急 they're having a good time 的意思 They're having a good time () (make) food 补全单词 Look!They are having a piano l_____ Look at the flowers!they're _______(colour) look at the pandas.they re so cute 翻译 根据描述写出词.They're animals. They're black and white. They look like houses.They're__They look like horses.They're___.