用括号内所给单词的适当形式填空

duck   bread    instruction  cut    check

He ________ up the apple and ate it quickly.
Please read these _________ carefully before you take the medicine.
—How do you like Beijing food?
—Very much. I like Beijing _________ best.
—What would you like for breakfast? —Some ___________, please.
You need to __________ your answers when you finish the exercises.