How about going on a trip to Guilin?(保持原句意思) ________ _______ go on a trip to Guilin?

问题描述:

How about going on a trip to Guilin?(保持原句意思) ________ _______ go on a trip to Guilin?

应该填why not
why not,how about,what about 都表示提意见,其中how about和what about后接动名词(doing something).why not 后接原型