How long has your brother been working in this factory —_____he dropped from school in 2010.

You’ve dropped ________ “s” in the word“necessary”.— Oh, ________ letter “s” is doubled.

What can they do —-They can teach _________Chinese.

The road conditions there turned out to be very good, ___ was more than we could expect.

Patrick is interested in animals, so he enjoys _every Saturday working in an animal hospital.