【题目】用适当的形式填空
(1) What are you ______ (do)?
(2) I am _______ (close) the windows.
(3) Look! The windows are _______ (close) now.
(4) They_______ (is) playing basketball.
【答案】1. doing; 2.closing; 3. closing; 4.are
【解析】
略
【题目】用适当的形式填空
(1) What are you ______ (do)?
(2) I am _______ (close) the windows.
(3) Look! The windows are _______ (close) now.
(4) They_______ (is) playing basketball.
【答案】1. doing; 2.closing; 3. closing; 4.are
【解析】
略