.
She ______have stopped her work halfway.
| A．ought to not | B．ought not to | C．not ought to | D．does not ought to |
He is an_________boy.
| A．8-year old | B．10-year-old |
| C．18-year-old | D．8 year old |
About_________of the students in the class are girl students.
| A．three-fives | B．three-fifth |
| C．three-fifths | D．third-fifths |
You think your ruler is very long，but his is _________yours.
| A．twice as long as | B．three as long as |
| C．twice longer as | D．once as longer as |
—What’s the time，please?
— It’s _________.
| A．half past nine | B．half to nine |
| C．nine half | D．half nine |
The old building was founded_________ .
| A．in 1820s | B．in the 1820 |
| C．in the1820s’ | D．in the 1820s |