问题补充:
He teaches in university and is expert on politcs.
A. an, a
B. the, a
C. a. an
D. a. the
答案:
A. an, a
B. the, a
(答案→)C. a. an
D. a. the
解析:这二个空都是表示泛指,expert 第一字母发元音,但university不是,
时间:2021-12-28 23:06:11
He teaches in university and is expert on politcs.
A. an, a
B. the, a
C. a. an
D. a. the
A. an, a
B. the, a
(答案→)C. a. an
D. a. the
解析:这二个空都是表示泛指,expert 第一字母发元音,但university不是,