问题
选择题
The Smiths ______ sending e-mails ______ letters because it is faster.
A．prefer; to writing
B．prefer; to write
C．prefers; to writing
D．prefers; to write
答案
答案：A
考查固定短语。这里是prefer doing sth to doing sth.而这里是The Smiths作主语，故用prefer .