【2014,河南】This bus doesn't go to the train station.I'm afraid you'll have to__ __ at the library and take the A52.
Danny,______ more careful or you will fall down.
____interesting experiment it is!
This book ___ be yours. Look! Here is your name.
Whose book is this? It’s not___ book,____ is over there
The problem isdifficult few students can work it out.