我要的是原因,1.--Let's go to China Dinosaur Park now.It's of great

我要的是原因,
1.--Let's go to China Dinosaur Park now.It's of great fun.
--________.I have to do my homework first.
A.i hope so B.look as C.i don't think so D.I can't go
选D,为什么?
2.After waiting for two hours,we finally saw the sun _____ in the east.
A.appeared B.was appeared C.appear D.to appear
选C,为什么?
大概从语法语境分析吧.
1.--Let's go to China Dinosaur Park now.It's of great fun.
--________.I have to do my homework first.
A.i hope so B.i'm afraid not C.i don't think so D.I can't go
选D，为什么？
2.After waiting for two hours,we finally saw the sun _____ in the east.
A.appeared B.was appeared C.appear D.to appear
选C，为什么？
抱歉第一题B项打错了。那可是重点。——i'm afraid not为什么不行？