It is necessary _____ us to make full preparations before a test.
A: by
B: to
C: for
                    A: by
B: to
C: for
举一反三
- Two days ________ (allow) themto make the necessary preparations for the meeting.
 - It is necessary that a test taker (examine) _______________ the test paper before handing it in.
 - What preparations do you usually make before a journey?
 - Mr. Wang asked us to make preparations for the meeting ______next week.
 - The following are the necessary preparations for a tour guide before picking up guests, except for____. A: necessary items preparation B: image preparation C: psychological preparation D: physical preparation
 
