问题 填空题 看图,补全句子。1. — What's this? — It's a .2. — What's this? — It's a .3. — Where are the ? — They are in the .4. — What's this? — It's a .5. — Where are the ? — They are on the . 答案 1. pencil case 2. blackboard 3. pens, pencil case 4. marker 5. books, desk