题目内容：

一般疑问句 tom is visiting a friend（否定回答） the student are surfing the Internet.(否定回答)
tom is visiting a friend（否定回答）
the student are surfing the Internet.(否定回答)
I can touch my toes with my left hand.(肯定回答)
jack is travelling in china..(否定回答)
they are watering the trees..(肯定回答)
将下列句子改为一般疑问句，并作肯定或否定回答

优质解答

1.Is Tom visiting a friend?No,he isn't.2.Are the students surfing the Internet?No,They aren't.3.Can you touch your toes with your left hand?No,I can't.4.Is Jack travelling in China?No,he isn't.5.Are t...