问题

I don’t know ___________or not.—Neither do I. You may ask his teacher.
A:whether he is at school
B:he is at school
C:that he is at school
D:when he is at school;
B:he is at school
C:that he is at school
D:when he is at school;
正确答案是:
同类题型
In the face of all these difficulties, we’re not discouraged and our spirits well.
I recognized him_________ I saw him in the crowd
Einstein was famous _________ a scientist _______ his Theory of Relativity
He enjoys collecting,. He has collected over three _____ stamps.
I know these flowers are not natural, but the _____ ones look more beautiful and can last long.