The eggs will go bad soon in such hot weather ________ they are put in the fridge.
The teaching building has five floors. My classroom is ______________ the third floor.
—Open the window please, Mike.—____________? I didn’t hear what you said.
----Do you mind if I sit here? ----________. It’s for Mr Brown.
Never stand up ________ you are asked to.
____ Lily ______ Lucy may go with you because one of them must stay at home.