Remember to           the lights when you leave your classroom.

 The world’s population is getting larger and larger, so scientists will have to ______ new ways to solve food problem.

This suit _______him _______very young.

 I like fruit such ______ apples ,pears and bananas .

–Zhou Libo can always ____ some special ways to make his talk shows more popular in China.–Yeah. He is very smart and creative.