She studies for an English test by_______the textbook.
If I you , I’d wear a shirt and tie.
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.
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