Over the years I have collected five ________ foreign stamps, ________ of them are from the USA.
A. hundred; two hundreds B. hundred; two hundred
C. hundreds of; two hundred D. hundreds; two hundreds
Don’t laugh ___ others.You should help them when they are in trouble.
A.at B.to C.of
Sixteen-years-olds shouldn’t ______ to go to an Internet bar.
| A．be allowed | B．be allow | C．allow | D．are allowed |
When we practice English speaking, we often end up ____in Chinese.
A.speak B.spoken C.speaking
Many students asked the teacher _____ the time of the test.
A.for B.to C.about
I study math by ____ lots of exercises.
A.did B.doing C.Do