[ Vocabulary ]
What is the the principle that in undisturbed rock layers, the oldest rocks are on the bottom?
A. tilt
B. principle of superposition
C. uplifting
D. principle of horizontality
Select your answer:
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Conjunction › ViewThe boy is ______ mean _______ unkind, in fact he is a friend to everybody.
A. both/and
B. neither/nor
C. no sooner/than
D. either/or
Tenses › View
Form a sentence using the verb ‘run’ in past perfect tense.
A. He will run the marathon before he injured his leg.
B. He has run the marathon before he injured his leg.
C. He had run the marathon before he injured his leg.
D. He run the marathon before he injured his leg.