Bob can play ________ tennis but can’t play ________ violin.
| A．the, the | B．×, × | C．the, × | D．× , the |
--- 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. myC. 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 ___________.
| A．put them up | B．call them up | C．clean them up | D．give them up |
_________ her mother, she became a famous scientist.
| A．With the help | B．Thanks for | C．Thanks to | D．As a result |