If you have really been studying English for so long, it's about time
you ____ able to write letters in English.
A) should be B) were C) must be D) are
这道题选B,为什么A不对?it is about time虚拟语气有时候不是也用should do吗
The bookcase is wider than it is tall.主句比较项是wider, 那么该比较对应项在比较分句than分句中必须省略,但是我的困惑是:than it is tall 似乎不缺成分呀?如何理解than it is tall不缺成分,以及如何理解主句比较项wider在than分句中必须省...