She ______ know the answer, but I’m not sure.

The earthquake (地震) in Yushu Qinghai happened ____ 7:49 ____ the morning of April 14th. [ ]

His mother was born in Green, and Greek was her native language, ___.

She didn’t finish her homework yesterday evening because she worked too _________.

There__________ a concert of Justin Bibber in Zhuhai next month. Shall we go? — Sure, I like him a lot.