what is this?
this is a sail
what is this?
it is the sea
what is this?
it is sand
what is this letter?
it's letter S
chúng ta hãy nhìn vào biển
let's look at the sea
chúng ta hãy nhìn vào bãi cát
let's look at the sand
chúng ta hãy nhìn vào chiếc thuyên
let's look at the sail
