Lan wasn't here,so she couldn't help me with these exercises(because)
We won't rent this house because the neighborhood is noisy(so)
Mai couldn't attend the meeting because she was busy(so)
Households dump waste into the river ,so it is polluted(because)
Leaves are damaged ,so the tree can not get enough food energy to stay healthy(because)
There are so many billboard in our city .People can not enjoy the view(If)
I don't have enough money.I can not buy that car(If)
There are too much light in the city at night.We can not see the stars clearly(If)
Mai has a headache after work every day .She works in a noisy office(If)
Lan wasn't here,so she couldn't help me with these exercises(because)
Lan couldn't help me with these exercises because she wasn't here.
We won't rent this house because the neighborhood is noisy (so)
The neighborhood is noisy so we won't rent this house.
Mai couldn't attend the meeting because she was busy(so)
Mai was busy so she couldn't attend the meeting.
Households dump waste into the river ,so it is polluted(because)
The river is polluted because households dump waste into it.
Leaves are damaged ,so the tree can not get enough food energy to stay healthy(because)
Because the tree can not get enough food energy to stay healthy, leaves are damaged.
There are so many billboard in our city. People can not enjoy the view(If)
If there are so many billboard in our city, people can not enjoy the view.
I don't have enough money.I can not buy that car(If)
If I don't have enough money, I can not buy that car.
There are too much light in the city at night.We can not see the stars clearly(If)
If there are too much light in the city at night, we can not see the stars clearly.
Mai has a headache after work every day .She works in a noisy office(If)
If Mai works in a noisy office, she has a headache after work every day .