Our monitor talks about Mars as if he ______ a scientist

The old man sitting under the tree smiled dreamily, as if _____something pleasant in the past.

The fridge is _____for one year. Itmeans that the company that makes it promises to repair or replace it if itbreaks within a year.

When the injured _____ to the hospital , they came to .

If we________develop the world successfully, we must make sure that everyone is able to take part in the new world we create