单项选择题
M: What’ s the matter, Bill M: These letters are full of mistakes! Those typists at the office never do anything right.
A. The letters. B. The typists. C. The woman. D. The office.
A. because the reader immediately knows what you are intended to discuss B. because you have the topic sentence to refer to as you write on C. because you are not experienced D. both A and B
A. sheets of paper. B. clothes for exchange C. some money D. some tickets