Look! The students are playing on the playground. Some are running, some are playing basketball, ________ are watching.

It has been written into law that drink driving can be a crime(罪).—I quite agree. We should better be careful not to _____________the law.

No matter how hard he worked, ___ ____

What ______ the noise, Bill?—Sorry, I broke my glass.

Li Ming is learning English____.[ ]