I don’tknow if Mr. Li ____ to the party this evening.–I think he will come if he ____ free.

r Smith, may I ask for a few days off I am worn out.–____. We are too busy.

Everyone must _____ the security check (安检) before getting on the plane at the airport.—Yes. It’s necessary to ensure the passengers’ safety.

Soon children in the camp had many new friends,they shared food, stories and projects.

I can never forget the days________we worked together and the days________we spent together [ ]