[ Vocabulary ]
______________ are ways that scientists perform investigations.
A. control
B. experiment
C. scientific methods
D. variable
Select your answer:
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Other quiz:
Present Progressive (Future) › ViewWhat are you doing _______ afternoon?
A. at
B. next
C. tomorrow
D. on
Grammar › View
On Saturday, Joe brought Fido a bone from the doggie boutique.
There are __________ prepositional phrases in this sentence.
A. 0
B. 1
C. 2
D. 3
E. 4
How to use : Read the question carefully, then select one of the answers button.