will you be free________next year?A in B / C on

will you be free________next year?A in B / C on Which sports will you be ____ today?A.at B.on C.in I will be back ( ) a moment.A of B in C on D for He will be back __ a few weeks.A.in B.on C.for D.at 253.Hold on,I _____ in a moment.A.am coming B.will be back C ( ) 50 years what ( ) the world be like?A.On;is B.In;will C. 20) ( ) What will you do __________ the future?A.on B.in C.a Will you go to the park _____ this Sunday?A:\ B：in C：at D：on Will you pick the apples ___ the tree?A.on B.in C.for D.of 56. What will you do ________ vacation? A. on B. in C. to D. Mary ________ten years old next year. a.will is b.will be c. The mount will ___ trees in a few year.A be covered with B:b