Persons under 18 _____ not be employed in night work in the US.
He kept the light in his room ______ the whole night.
----- We haven’t heard from Jane for a long time. ----- What do you suppose ______ to her?
In the USA, he made a lot of friends ______ English well to make himself ______.
Please tell me the way you thought of ______ the garden.
Whom can you trust, if not _______ ?