问What is he doing 答he ( ) a book 1.read 2.reads 3.to read 4.is ea_英语解答

问What is he doing 答he ( ) a book 1.read 2.reads 3.to read 4.is eading

人气：322 ℃　时间：2020-04-23 01:10:34

解答

4 is reading
因为问句是进行时,所以答句也用进行时.