. The mother often tells her son to be a good boy, warning him to ______ trouble.
How about taking short break? I want to make — call.
It is demanded that the plan _____ out as soon as possible.
Generally speaking, employers should not _____ themselves in the private matters of their staff.
—How was your journey last week?—Very interesting. The people there still keep the custom _____ the Ming Dynasty, which is different from other areas.
—Have you sold your house?—No. Last week only four people came to look at the house, _____ wanted to buy it.