Question

用Who 提问I am reading a book .They are in the class .We like t

Answer 1

1、Who is reading a book?

2、Who is in the class?

3、Who is likes to have maths lesson?

Who把Be动词提前（am,is,are)提到句首,加上Who,但因为who与其它特殊疑问词不同（比如：where,what,when),它的提问是用第三人称单数形式(I是第一人称,you是第二人称,she、he、it是第三人称）,所以只能用is.