water do we need to drink to keep healthy every day—Study shows that eight glasses should be enough.

There is nothing in the fridge, _________

om looked back on the earlydays of their marriage, she wondered how they had managed with ______ money.

While studying,fix your mind on what is really important,or you will_______remembering nothing.

_____he works hard, I don’t mind when he finishes the experiment.[ ]