1-5/6. Giuptovoi

`1.` While I was doing my homework, I broke my pen.

`2.` We were walking home from school when it started to rain.

`3.` When I went to get the tickets, I realized I didn't have any money.

`4.` My mother was classifying old clothes while my father was preparing the food packages for the next voluntary trip.

`5.` Some volunteers were teaching disable children while others were repairing some furniture in the orphanage.

`---`

`-` While/When + clause, clause

`-` clause + while/when + clause

`->` Trong khi....