【题目】Celia isn't . Her books are everywhere — on the floor, on the bed ...

【题目】The physics problem is too hard, so _______ students can work it out.

【题目】Jack doesn't like playing computer games. He thinks it's .

【题目】________ May 5th, 2017, the C919 took off successfully for the first time at Shanghai Pudong International Airport.

【题目】-I lost my volleyball.

【题目】-Maria, I your pen. Here you are.

【题目】We'll have to say goodbye, my dear friends! But I will forget the days we spent together.

【题目】Betty is a good girl. She often her brothers and sisters.

【题目】This picture ______by my cousin last year.

【题目】— Tina, have you tried mom’s cookies?