They (play) ......................... baseball next month.

They (play) ........Will play ......... baseball next month .

`***` Áp dụng : Thì tương lai đơn 

- Dấu hiệu : Next month . 

- Ctrúc : 

+) S + Will / Shall + Vinf + O/N 

-) S + Will / Shall + not + Vinf + O/N 

?) Will / Shall + S + Vinf + O/N ? 

- I , you , we , they , he , she , it : Will 

- I , we : Shall