EX1:
$\text{Smoke from mills, factories and industry can lead to the health problem like asthma and lung diseases.}$
EX2:
$\text{1. Pig-racing is often held at a country fair for entertainment.}$
$\text{2. The number of English speakers in the World is increasing fast}$
EX3:
$\text{What did you do from 3 to 6 yesterday afternoon.}$
Chúc bạn học tốt, hãy vote5*+CTRLHN+Cảm ơn :33