Who taught ________ to write the computer programs—Nobody. She learned it by __________.

一Kurt stayedup for three days preparing for the exam and finally fell ill．一So．I dare say if you overworked for several days in arow.

What about ______ bike — Don’t you thinkit all right to buy him that bike as _____ birthday gift

Maggie is a neat and tidy student, wholikes to have everything ______.

n’t like coffee _____tea, but water．