---Do you know_______ the books on the shelves? --- Sorry, I can’t count them, because there are _______books. A. a number of; the number of B. a number of; a number C. the number of; a number of
Just like weather, life_______ be sunny and beautiful all the time.
It is impossible for _____ little children to do _____ much work within 20 minutes.
The Hobbit is such____wonderful science fiction movie that I want to see it_____ second time.
Nobody knows ______ yesterday.
The park gates ______ at 10:00 every evening.