`b.` I am meeting my friends this evening 

`c.` Tom isn't coming to the party on Thursday 

`d.` My sister is getting married next December 

`e.` I am not going to London tomorrow 

`f.` I am not staying home tonight

`g.` I am going to the theatre on Monday

`h.` George is going to the dentist on Friday 

`i.` Alice is going on holiday to Mexico 

`j.` Bob is playing football on Saturday 

`-` Cấu trúc thì Hiện Tại Tiếp Diễn

`(+)` S + am/ is/ are + Ving

`(-)` S + am/ is/ are + not + Ving

`(?)` am/ is/ are + S + Ving..?

`-` I + am

`-` He/ She/ It/ N số ít.. + is

`-` We/ You/ They/ N số nhiều.. + are