He has been working too hard.______, he needs to have a rest.

How manystudents in your school have been___to famousuniversities this year?[ ]

It’s the classroom! So you _______ know playing basketball is not allowed here.—Oh, I am really sorry.[ ]

Everyone in my class passed the exam.—Oh, really? It ________ difficult.

Could you do me a favor to carry the baggage— ______.