问题

Before I talked with ______ scientist, I had never met______ clever person like him.
A:the; a
B:a; a
C:the; the
D:a; the
B:a; a
C:the; the
D:a; the
正确答案是:
同类题型
Will you stay for some more days? —Sorry, I_____. My mother called to ask me to go back at once.
While I _______ TV in the sitting room, the bell _______.
Not until the stadium of Bird’s nest was completed in the end ____back to their normal position.