[ TOEFL ]
___________ of precious gems is determined by their hardness, color, and brilliance.
A. The valuable
B. It is the value
C. It is valuable
D. The value

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Reported Speech › ViewMs Pang asked, ‘Should we cancel the grammar test?’
A. Ms. Pang asked should we cancel the grammar test
B. Ms. Pang asked if we should cancel the grammar test.
C. Ms. Pang asked we should cancel the grammar test.
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Grammar › View
What form does the ‘past perfect’ tense take?
A. Subject + have/has + V3
B. Subject + had + V3
C. Subject + have/has + V2
D. Subject + had + V2