问题

_____ he is very young, _____ he knows a lot about science.
A:Could; can’t
B:Could; couldn’t
C:Can; don’t
D:Can; couldn’t;
B:Could; couldn’t
C:Can; don’t
D:Can; couldn’t;
正确答案是:
同类题型
It will be less than a fortnight_______we get to a turning point in our life
Did your football team win yesterday? — No It was a good game, _____ []
The best way to prevent the air polluting _____ , but the sky is still not clear
____ is no doubt ____ Jennifer will come to see me this weekend as usual.