The study of sedimentary rocks
C. Atmospheric chemistry
Question Words Complement vs. Compliment Possessive Adjective Who or WhomWho am I?NounGrammar (want to/ need to/ have to)BASIC GRAMMAR - PRONOUNSBe Going To vs. Will
Other quiz: Passive Voice
The problem_________________ (solve) quickly once the manager arrived.
A. The problem is solved quickly once the manager arrived.
B. The problem was solved quickly once the manager arrived.
C. The problem has been solved quickly once the manager arrived.
How to use : Read the question carefully, then select one of the answers button.
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