I drink a glass of milk before going to bed to help me sleep.

Volunteering at the food bank is a great way to help people in need.

The dancer moved gracefully across the stage druing the performance.

Let’s collect old textbooks to give to children in mountainous areas.

My sister is fond of making vlogs about animals.

Last week, I had a sore throat, so I stayed at home.

1.My brother ate something bad and he had a stomachache.

2.Don’t forget to organize a talent show to raise money

3. You should not eat junk food every day.

4.I prefer listening to country music to classical music.

thể tích = abc = 50*30*20=3000 cm khối

tích diện tích giấy bìa làm thùng ( diện tích toàn phần) = 2(a+b)*c+2(ab)= 2*( 50 + 30)*20+2*(50*30)=6200 cm vuông

:D