------You ran into Mr. Li! How did that happen? ------Well, _______ of us was looking where we were going. We came around the corner at the same time.
Helping others is a habit, you can learn even at an early age.
Vitamin D helps our bodies make a special chemical, and this special chemical, ________, affects our brains, making us feel happy.
Don’t worry about the child. Next to him ________ a lady, _______ he can turn when he is in trouble.
The girl had hardly rung the bell the door was opened suddenly, and her friend rushed out to greet her.
——How did you like Nick’s performance last night? —— To be honest, his singing didn’t to me much?