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Earth is believed ______ by an object the size of Mars at some point in the distant past before itssurface cooled.

A．to be hit	B．to have hit
C．to have been hit	D．to hit

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He will stop showing off, if no notice ＿＿＿＿＿ of him.

A．is taken

B．will be taken

C．takes

D．has taken

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—— We ＿＿＿＿＿ that you would fix the TV set this week.
—— I’m sorry.I ＿＿＿＿＿ to fix it this week, but I’ve been too busy.

A．had expected； had intended	B．are expecting； had intended
C．expect； intend	D．expected； intend

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.I can guess you were in a hurry.You＿＿＿＿your sweater inside out.

A．had worn

B．wore

C．were wearing

D．are wearing

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Mary ___________to see you．She．_________ for you downstairs at the moment．

A．has come；is waiting	B．came；is waiting
C．has come；waited	D．came；was waiting

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__________ in thought，he almost ran into the car in front of him．

A．Losing

B．Having lost

C．Lost

D．To

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