In later years, people reported ____ a monster swimming across the lake.

A year earlier, Amelia had become the first woman passenger ____ across the Atlantic.

If ____ in, the viruses can result in illness or even deaths.

—I have been waiting for you so long. —Sorry, I have been in the library, _______ my friend look for some books.

I am pleased to have this chance today ______to you about the United Nations or the UN.

—How are you getting on with your work?—Oh, I'm sorry. Things aren't going so well as ________.

Having been attacked by terrorists, ______.

—Are all the titles of the articles      in the contents?—Yes, all      .

The bank is reported in the local newspaper,     in broad daylight yesterday.

—I’m sorry, but I didn’t mean        out your secret.—But you know, letting out one’s secret means    one’s feelings.

____ with the size of the whole earth, the highest mountain doesn’t seem high at all.   

There is no need ______ because Mr. Smith is still sleeping.

When ____about his family, he is always refusing to answer.

All flights___ because of the snowstorm, we decided to take the train. 

Ladies and Gentlemen, please remain   until the plane has come to a complete stop. 

__________ the experiment right, I tried again and succeeded.

When _________ where he had put the book, he kept silent.

The young lady prefers dressing up for a party to        by others.

In April, thousands of holidaymakers remained ________ abroad due to the volcanic ash cloud.

The suggestion of the meeting __________was not adopted by the chairman, so the meeting would be held on time.