If Trang _______ her room every day, her mother _______ so upset.

A. tided/ wouldn’t be ​C. tidies/isn’t B. tidies/ won’t be ​D. tidied/ won’t be

May aquatic animals die ________ the polluted water.

A. because ​B. due to ​C. because of ​D. Both B&C

. The cold weather in this country often makes him ________.

A. sneezing ​B. sneeze ​C. to sneeze ​D. sneezed

 _______ there was a lot of acid rain, many botanical species died last year.

A. Since ​B. Cause ​C. Although ​D. So

. We ________ pay so much money for electricity a month if we ________ the air conditioner all the time.

A. wouldn’t have to/ don’t turn on ​C. wouldn’t had to/ didn’t turn on B. would have to/ didn’t turn on ​D. wouldn’t have to/ didn’t turn on