问题
选择题
I often have conversations with John over telephone, while keep in touch with Tom by__________ letter.
A.不填;;the
B.不填;a
C.the;不填
D.the; a
答案
答案:C
本题考查冠词的用法。前一个空over the telephone表示“通过电话”;by letter表示“通过写信”,by表示方式后直接接一个名词。