If we go on using energy so wastefully, __________ are that our oil wells will be dried up before new energy sources can be found to replace oil.
It is clear that a computer works ______ faster than an abacus .
Tommy is _______ captain of the class team at school and he is also _____ member of _____ Senor High team.
______ students up to 2, 000 , the school has built another laboratory.
Every possible means _______ to prevent the crash , but the computer doesn’t still work.
Have you made up your mind ________ abroad? I advise you to consider it carefully.