My son __________ his clock  when I went to get a cup I __________ in his study.

I’m afraid by the time you arrive this afternoon I_______ a lesson then.

He said that his friend ______ there three days before, but she was not there_______.

--May I remind you that Mr. White is waiting outside, Mrs. Green? ---Oh, I _________ all about it. 

 They say in many western countries a large number of beef cattle ________.