问题描述：
-Do you have any plans on this holiday?-how about having a picnic.It is _ to have picnic outside.
-Do you have any plans on this holiday?
-how about having a picnic.It is ( )to have picnic outside.
A.interest
B.interesting
C.interested
-Do you have any plans on this holiday?
-how about having a picnic.It is ( )to have picnic outside.
A.interest
B.interesting
C.interested
问题解答：
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