$\text{C1.You should listen to the weather forecast before going camping.}$
$\text{C2.You should take exercise every day.}$
$\text{C3.You should drink the water there. It make you ill.}$
$\text{C4.You shouldn't eat lot of sweets.}$
$\text{C5.You mustn't use your phone in class.}$
$\text{Học tốt!!!}$