What’s your plan for your winter holiday ? —– I haven’t decided _____.

Some of my friends are interested in science, but none of them can tell ____________.

If you get on well _________ your classmates, you’ll enjoy your school life more.[ ]

You don’t look well, Don! You’d better see your doctor.— I ________, but he said there was nothing wrong.

This kind of animals has nearly _____ because their homelands are gone.