I failed in the examination last week and I regret _____________ hard.

When Tony came to, he found himself ___________ in hospital with his teachers and classmates around him.

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The jewelry shop is reported in the local newspaper ___ last night.

He is said___________a book on the history of Chinese tone bridge , but I don’t know if he has finished it.
A. to have written   B. to be writing    C . having writing    D writing

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. Few visitors leave Rio feeling _________.

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The man insisted _________ a taxi for me even though I told him I lived nearby.

A 3G mobile phone, ______to be most useful and fashionable, is popular with some teenagers.

To keep the air clean this hospital forbids all the patients ________ in and around it.

America is an ________ country.

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–How did you know the surprising news?
–I happened ______ the event then.