The twin sisters look alike. It’s not easy to tell the difference ________Jessie and Millie.

Some retired people have nothing to doThey often get together and ___for hours talking about their past experiences

Mr. Smith is ______ to attend the party to beheld next Wednesday.

It was a pity that the great writer died _______hisworks unfinished.

The Internet is very useful. We can get a lot of____________ from it.