If I had a million dollars, I’d give it away to___/′medikəl/ research.
We looked at each other ____ surprise when we heard a bird singing “Happy birthday to you”.
She will leave her homework ____ the teacher’s desk afterschool today.
–How do you learn English so well? –____ chatting with my uncle in America online.
–How do you travel to school every day? –I go ____ bus.
We have been in No. 7 Middle School ____ three years. A. since B. in C. for