_______ it will do us harm or good remains to be seen

－ What does the sign over there read － “No person ________ smoke or carry a lighted cigarette, cigar or pipe in this area”

Its my advice that she ____ right now, or she might be late for the plane:( )。

1_____education is the instruction that occurs when the instructor and students are separated by distance or time,or both

29．__________ when you are on the bus or bike．

—When can I call on you, afternoon or evening?
—________. I’ll be at home all the time.

Either he or I ______to the airport.

These natural resources will be______sooner or later if the present rate of exploitation continues.

In ______, the only element that can be deleted or removed is the one that was inserted most recently.

It will be a relief over the death of a friend or a relative if the friend or relative dies from ______.

Hurry up, or you ______ catch the train.

______no air or water, there would be no life in the world.