What do you have __________ supper— There _____ some milk and bread in the fridge.

China is a _____country, while Japan is a ______country.

_____ Jack ____ Mike can go to the meeting because one of them must stay in the classroom.

The hospital has a new system to help ______ the best service _______ the patients.

_______,but it is also a great way to lower the number of greenhouse gases in the air.