Boys and girls, believe in yourselves. Theyou are, the better grades you’II get.
A. more careful
B. more carefully
C. most carefully

What good news! Our school band (乐队)will play at Harbin Summer Concert in August.
A. a B. the C. /

—Our class will have a party the evening of June 30th. Would you like to come?
—Yes, I'd love to, but I'm going to visit my grandparents in Dalian.
A. in B. on C. at

Our government has tried many ways to the smog(雾霾)problem. Maybe we'll have a clear sky in the near future.
A. put away B. work out C. come up

Health is important for us teenagers, so we should eat more vegetables such as
to keep healthy.
A. tomatoes and potatoes
B. tomatos and potatos
C. tomatos and potatoes