1. He had to go hospital because there was too much dust from( because of)

=>

2.she was late because there was much traffic (because of)

=>

3.Because his wife was there.I said nothing about it(because of)

=>

4.Peter was worried because Mary was late(because of)

=>

`color{red}{#Atr}`

`1.` He had to go to the hospital because of too much dust. (Xem lại đề vế cuối)

`2.` She was late because of heavy traffic.

`3.` I said nothing about it because of his wife's being there.

`4.` Peter was worried because of Mary's lateness.

`@` Mệnh đề nguyên nhân:

`=>` Because + S + V + O, S + V + O

`=` Because of + N / NP / V-ing, S + V + O