`19` `B`

`-` S + V(s/es) + O 

`-` Badminton là số ít `->` chia V(s/es) 

`20` `A`

`-` from + place + to + place : từ địa điểm nào đến địa điểm nào đó

`-` S + V + adv 

`21` `C`

`-` game : trò chơi

`-` the + N 

`22` `C`

`-` TT sở hữu + N

`-` their : của họ 

`23` `B`

`-` Badminton competitions là số nhiều `->` chọn many 

`-` many + N(đếm được,số nhiều) 

Today, badminton becomes a very popular sports activity. It spreads quickly from the city to the countryside. People need only a pair of rackets, a shuttlecock, a net, and a small piece of land to play the game. Two or four players hit the shuttlecock over the net with their rackets. People can play badminton in their free time or in a competition. Now there are many badminton competitions and even a Word Cup. The strongest countries in badminton are Indonesia, China, and South Korea.

Xin hay nhất ạ