[ Preposition ]
Geologists assign dates to many rock masses ……….. means of radiometric dating, which is a technique based ……… the atomic structure of the elements.
A. in/for
B. for/in
C. as/with
D. by /on
Select your answer:
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Parts of Speech and Grammar › ViewMichael is writing a research paper and wants to indicate omitted words in a quotation. Which punctuation mark should he use?
A. Dash
B. Hyphen
C. Ellipsis
D. Parentheses
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It drives you mad……..
A. is it?
B. does it?
C. doesn’t it?
D. won’t it?