--How about the book you are reading? --Good indeed. It ______many problems we have come across in our study.
Jane opened the door. There ______ she had never seen before.
The newly-built café, the walls of ______ are painted green, is really a peaceful place for us, especially after work.
Apple’s iPad2 uses a 9.7-inch touch screen like the iPad. ______, it is equipped with a pair of new cameras, which the iPad doesn’t have.
I think it ______ that she should be knowledgeable about computers for her present job.
We don’t ______ students staying up late.