giup e vs e can gap a mn giup evs

`37`. If John doesn't try hard, he won't pass the entrance exam.

`⇒` Cấu trúc : Unless = If not

`38`. Because of heavy rain, we can't go for a walk.

`⇒` Cấu trúc: Because of + N, S + V = Because + S + V, S + V

`39`. Why don't we use electricity economically?

`⇒` Lời gợi ý

`⇒` Cấu trúc: Let's Vo = Why don't we + Vo

`40`. They suggested that an advertisement should be put in the local newspaper.

`⇒` Cấu trúc: S + suggest + that + S1 + ( lùi thì )