The reason _________ I plan to go is _________ she will be disappointed ________ I don't.

1. A.
   why;because;when
2. B.
   that;that;if
3. C.
   because;that;if
4. D.
   why;that;whether

The reason _________ I plan to go is _________ she will be disappointed ________ I don't.

[　　]

A．why;because;when

B．that;that;if

C．because;that;if

D．why;that;whether

The reason _________ I plan to go is _________ she will be disappointed ________ I don't.

[　　]

A．why;because;when

B．that;that;if

C．because;that;if

D．why;that;whether

The reason I plan to go is ________ she will be disappointed if I don't．

1. A.
   because
2. B.
   that
3. C.
   thanks to
4. D.
   what