根据句意及汉语提示，写出正确的单词
These ______（问题）are very easy. Everyone can answer them.
---Can I help you,  Mr. Green?
---Yes, please get some ______（粉笔）for me.
Look! Mrs. Wang is ______（拿）a camera.
Mr. Smith is checking his students’ English ______（水平）.
Will students ______（需要）any books in the future?