[ Grammar ]
We met the new neighbor two days _______
A. since
B. for
C. ago
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Grammar › ViewI planted a sunflower inside a cup.
What is inside?
A. preposition
B. adjective
C. verb
D. pronoun
Vocabulary › View
__________ is a technique in which scientists calculate the age of a sample based on the amount of remaining radioactive isotopes it contains
A. isotope dating
B. retroactive dating
C. radioactive dating
D. index fossilization
Grammar › ViewI look terrible. I think I need ______________
A. to cut my hair
B. to have my hair cut
C. to have cut my hair
D. my hair to cut
Present Tenses › View
How long ___________ you _____________ my sister?
A. have / known
B. have / know
C. have / been knowing
D. have / been known