[ Grammar ]
I (wait) _______________ for a taxi when I saw my friend.
A. was waiting
B. waited
C. wait
D. am waiting

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Vocabulary › View______ is a chemical reaction between substances, which usually includes oxygen and produces heat and light.
A. Combust
B. Combustion
C. Combustible
D. Combusted
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. A public limited company is one whose ___________ are listed on a stock market. In other words, ordinary people can buy and sell shares in the company.
A. firms
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Grammar › ViewWe … to the countryside two months ago.
A. go
B. have gone
C. went
D. will go
Reported Speech › View
“Where have you spent your money?” she asked him.
A. She asked him where he had spent his money
B. She asked him where he have spent his money
