[ Verb Patterns ]
Susan warned her sister …..(not, open) the door when she is alone at home.
A. not open
B. not opening
C. not to open
Select your answer:

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A. from
B. of
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The merchant said that the price of the Indian carpet is a bit … than those of The Persian carpet.
A. Cheap
B. Cheaper
C. Cheapest
D. The Cheapest
