Tích của hai cạnh nhân với nhau,rồi chia cho 2

1.You heard a new song on radio yesterday morning

2.There is a good film on yesterday.I not saw it

3.My mother forget to buy some milk when she went to the supermarket.

4.You aren't in hospital three days ago

5.We are lose our key last Friday

6.I give my mother a CD for birthday

7.They swam 500 meters yesterday afternoon

I write new words and memorize them

ế rồi hả chúc mừng