Is it all right if I sit here–______, sir. The seats are for elderly people only.

Can you finish __________ these books before Sunday — Yes, I can.

How many letters have you got from your online friends since last year—_______. We’re just chatting with each other when we’re free.

(2009大连双基) Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those ________ don’t

In those days, our ________ concern was to provide people who were stopped by the snowstorm withfood and health care.[ ]