Question

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In the middle of our lunch there was a knock at the door. => When.....

Answer 1

In the middle of our lunch there was a knock at the door. =>  When we were having lunch, there was a knock at the door

Answer 2

 

In the middle of our lunch there was a knock at the door. => When we were having lunch, there was a knock at the door.

Answer 3

Hahahaha, ông chơi hèn lắm
 

Answer 4

he!he! t mak ra tay thì.......