1. Fill in the necessary particle: in, with, up, of, up for, off.
1. Most travel agents deal ...... the companies.
2. We are at the airport to see Helen ....... Her flight arrives at 6 p.m.
3. Children should be aware ...... the danger of taking drugs.
4. One of his toes was cut ...... in the accident.
5. It's time we stood ...... our rights.
6. If a caller is rude, just hang

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