Couldn’t believe a boy three years younger than me had completed so much,          ?

A． hadn't he            B． couldn't I            C． could I                   D． had he

We couldn’t understand: what could ______ his sudden change of mind?

That couldn’t be better means____.

I couldn’t believe my ears when I heard my name called for the leading role in our high school play. Mrs. Dermit, my drama(戏剧) teacher, had been looking for someone to play an energetic boy in a play. Luckily for me, she thought that I could act the   1 .
That afternoon my friend Kevin and I talked   2  about the play. Although Kevin hadn’t been   3   for a role on the stage, his job with helping all the actors was important to the success of the play. I told him I was a little __4  because I had a lot of lines(台词)to memorize. “You can do it.” he said. I knew I could   5  on him: we had been friends since the third grade, and we made a good team.
Preparations for the play moved at a rapid pace. While doing his own work, Kevin also spent hours helping me learn my lines. He often said my lines with me by silently moving his lips. We   6  that he could probably play my part as well as I could.
Three days before the    7  night, everything was ready for the performance. But when I woke up with a high fever on the day of the play, the whole production came to a sudden   __8 . Everyone in the drama department was worried,   9  there was no way I could perform. The play was   10  to open in fewer than six hours, and we had no time to cancel. I tried to think of a way to help. Then it hit me---Kevin knew the   11  as well as I did. I called Mrs. Dermit to give her my   12 . Within a few short hours, Kevin stood on the stage in costume(戏服) and makeup. The amusing lines he had   13  with me so many times made the crowd laugh and cheer. In a strange turn of events, Kevin and I had   14  the day for everyone by working as a team.
Of course, I was terribly disappointed to have missed my chance in the spotlight, but I was extremely   15  to have such a good friend.

That couldn’t be better means____.

A．That wasn’t good                      B．That’s exellent news

C．That could be worse                     D．Well done