He felt curious that he asked many questions about it.
--- What’s the number of students in your classroom? ---It’s about fifty. __________ of them are girls. A., Two third B. Two thirds C. Second third
— Jane, is this your dictionary?— Yes, it's . Thank you.A. me B. my C. mine
---What _____ useful book! And ______ book is popular with students.A. a, a B. a, the C. the , the
How dirty your rooms are! You need to ___________.
_________ her mother, she became a famous scientist.