Before a problem can be solved, it must be obvious _____ the problem itself is. [ ]

You should always do eye ________. Don’t just sit at the desk busy doing ________.

When you make a decision to buy something, you must remember that a good name of product doesn’t ______ mean good quality of it

Who plays the piano , Sam or Jerry- Jerry. But he gave the performance chance to Sam this time.

She his number in the phone book to make sure that she had got it right.