John is studying hard. He doesn’t want to fail the exam.

Many doctors and nurses on duty during holidays don’t have time to relax. They don’t have time to meet up with their families.

Large cars use more gas than smaller ones.

"I'm sorry. I didn’t do the homework." said the boy.

Most scientists know him well. However, very few ordinary people have heard of him.

People have discovered a new source of energy.

They cancelled all flights because of fog.

Laura didn’t come to the conference. This made me annoyed.

It was wrong of you to criticize your son before his friends left.

Steve said to Mike, “Don’t touch the electric wires. It might be deadly.”

“You didn’t lock the door this morning as I found the Đáp án: s on the table when I got home!” the woman told her son.

They recommend that the hotel should be redecorated.

It’s cold outside and my leg hurts. I haven't been out for weeks.

He cannot practice scuba diving because he has a weak heart.

The best way to make them work hard is to promise them reward.

There is nothing new in the use of herbs and spices.

He is teaching me speaking and listening.

Tim graduated with a good degree. He joined the ranks of the unemployed.

She was so busy that she couldn’t answer the phone.

“Are you waiting for your exam result?” She said.

It was an interesting novel. I stayed up all night to finish it.