[ Grammar for TOEFL ]
Any possible academic assistance from taking stimulants _____ marginal at best.
A. it is
B. there is
C. is
D. as

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Grammar › ViewUnless she ….. a rest, she’ll have a headache.
A. has
B. doesn’t has
C. doesn’t have
D. take
Adjective Clause › View
Pay all the bills __________ are due this week.
A. —
B. That
C. When
D. They
I understand it very well. You … explain further.
A. Mustn’t
B. Needn’t
C. Wouldn’t
D. Shouldn’t
TOEFL Adjective and Adverb › View
Quartz glass, also called fused silica, is used in manufacturing . . . temperature fluctuation.
A. minimize
B. to minimize that
C. to minimize
D. minimize to
