When has the country been open to internationaltrade?—_____1978 , Isuppose

A number of students _______ reading in the classroom now.

Who’s your best friend? Is ____ a boy or a girl?—A boy. I often play with _____ after school.

―Where did you get to know her?―It was on the farm we both once worked in the 1970s.

What do you usually do ____ lunch time?[ ]