问题
The number of students in our school _______ 4000 and a number of them ______ good at playing Ping-Pong.
A:I went to Guangzhou .
B:I wrote a letter.
C:I go to the zoo.
D:I want to visit my mother.;
B:I wrote a letter.
C:I go to the zoo.
D:I want to visit my mother.;
正确答案是：
