In my opinion, you’d better eat and sleep more _____ lose any more weight[ ]

After the final exams, I will have a ___________ vacation in Hainan.

Emergency line operators(接线员) must always _____ calm and make sure that they can get all the information they need to send help.

You have made a few grammar mistakes in your essay but_________ you have done well[ ]

Whose notebook is this— It ________ belong to Lucy. Look, hername is in it.