Doctor, how are the twins going?- Don’t worry. _______of them needs_______.

About ________ of the workers in the factory were born in the ___________.

I need an apple and two eggs ________breakfast.[ ]

Some people are worrying about the possibility ________ mobile phones could be responsible for a range of illnesses, from rashes(皮疹) to brain tumors．

Don’t _________ too late, or you will feel sleepy in class.–I won’t, Mum. Good night!