We have been trying hard to find out the ____________of the homeless man, but without luck, no one can tell who he is.

I’m going to the supermarket. Let me get you some fruit.– OK. Thanks for your __________.

More than 60% of the students ____ thecountryside.

There is no doubt ______ he will pass the final exam, for he is always working hard.

He didn’t make________clear when and where the meeting would be held. [ ]