题目

An old man and his wife walked slowly into McDonald's   28   a cold winter evening. They took a table near the back wall,  and then the old man walked to the cash register (收银处) to order. After a while he got the food back and they began to   29   it.      There was one hamburger, some French fries and one drink. The old man carefully cut the hamburger into halves and   30   the French fries into two piles. Then he neatly put the 31   of the food in front of his wife.  He took a sip of the drink and his wife took a sip.  They took    32    to drink.�This is my dear teacher without_________help I couldn’t have passed that difficult exam.A.whoB.whomC.whoseD.that