Researchers are developing low-cost devices. These devices can detect water pollutants in rivers and lakes.

“Are there some oranges in the fridge?” She asked her mom 

=> She asked her mom ___________________________________. 

By the ages of 25, he ________two famous novels.

My boyfriend is very short-tempered. 

=> My boyfriend loses _________________. 

I'm very sad that I wasn't accepted in that group. 

=> I'm very sad not ____________________________. 

Tìm và sửa lỗi sai: 

It was an extremely frightened experience in my life.

Without conservation, human beings ________ survive for a long time.

His brother told him “You can use my computer today.” 

=> _______________________________________________.