The manager entered the office and was happy to learn that four-fifths of the tickets ______. [ ]

The US is a large country ________ many different dialects are spoken.

Studies show that students are more ______ to be addicted to playing computer games if they always play them before computer screens every day. [ ]

She is the only one of the girls who _______ in the company

Hardly could he this amount of work in such a short time.