`1.` because

`-` Because of needing a new laptop , Steven went to the shopping center last Sunday.

`2.` because

`-` Because of wanting to see the baby panda , Pam and her parents went to visit the city zoo.

`3.` because of

`-` Because the traffic in the city center is heavy , more and more people get to work late every day.

`4.` because of

`-` Because there is lack of water in the dams this year , there will be frequent water cuts in this region of the country.

`-` tobe lack of sth : thiếu thứ gì

`5.` because

`-` Because of no benches in the school garden , we have nowhere to sit and rest.

`-` Because + S + V , S + V + ...

`=` Because of + V-ing/Noun , S + V + ... : bởi vì

`-` Because of + V-ing : dùng khi cả 2 vế cùng chủ ngữ.

`-` Because of + Noun : dùng khi 2 vế khác chủ ngữ.