slacken off造句

Redouble your efforts and not slacken off.

You shouldn't slacken off in your study.

Business in the small village usually slacken off during severe winters.

He had worked without intermission for six months and now could slacken off for a holiday.

The demand for coal begins to slacken off in the spring.

We've been really busy, but things are starting to slacken off now.