MH 370 which held 239 people disappeared_________ the early morning of March 8th , 2014 .A. on B. in C. at
The new supermarket ______________ two years ago.
Mary _________ as a volunteer teacher for 10 years.
— Is Mike at home? — No. He ________ with his friends now.
I will tell you the good news as soon as you _______ back.
My grandma ______ dinner when I got home yesterday.