题目内容：

几个英语单选.
1.—-＿if I go to the stadium with David ,Mum?
-—Oh,all right.
A.Am I OK B.Could it be right
C.Is it OK D.Is it right
为什么选C,不选别的呢?
2.–Would you like to watch Chinese Prints this Saturday?
--Sure,and I ＿pick you up at the school gate.
A.could B.must C.should D.will
为什么选D不能选A呢?
3.What a good heart he has!He＿of others first.
A.always thought B.is always thinking
C.will think D.has thought
为什么不能选B?而选A呢?