He has ___ letters to answer and has to
题型：选择题
问题：
He has ___ letters to answer and has to work from morning to night. [ ]
A. much
B. a great deal of
C. masses of
D. the number of
He has ___ letters to answer and has to work from morning to night. [ ]
A. much
B. a great deal of
C. masses of
D. the number of