`9`. will see 

`->` tomorrow: tương lai đơn

`10`. will go - has

`->` If 1: If + S1 + Vs/es, S2 + will + Vinf

`11`. watches

`->` usually: hiện tại đơn

`12`. will go

`->` tonight

`13`. are - going to go - are going to fly

`->` Nói về kế hoạch, dự định chia tương lai gần

`14`. is singing

`->` listen: hiện tại tiếp diễn

`15`. had

`->` 2 days ago: quá khứ đơn

`16`. play

`->` often: hiện tại đơn

`17`. will buy

`->` next month: tương lai đơn

@Thỏ

`9`. Mary (see) will see me tomorrow.
`10`. He (go) will go to Vung Tau if he (have) has enough money.
`11`. She usually (watch) watches TV.
`12`. I (go) will go outfor a walk with my mother tonight.
`13`. A: Where are they (go) going to go for their holiday next month?
       B: They (fly) are going to fly to Paris.
`14`. Listen! Dan Truong (sing) is singing a song.
`15`. David (have) had a nice dream two days ago.
`16`. I often (play) play games at night.
`17`. My father (buy) will buy a new laptop next month.