this summer is ___ than last summer.空格要填什么?

this summer is ___ than last summer.空格要填什么? is this old castle()i visited last summer vacation?为什么不能填whe this is the hotel（）we stayed last summer The sunshine in this area in summer is ___ hot Did you go swimming last summer?( )填什么 This is the __(begin) of the summer 横线上填什么 last summer He____(visit)the summer palace last summer怎么填 Whom is this summer camp Winter is( )and summer is （ 括号里该填什么 This was the place ( )last summer holidays. This the last rose of summer,