[ Vocabulary ]
What are atoms of the same element that have different numbers of neutrons?
A. aluminium
B. radioactive dating
C. isotope
D. hydrogen

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Countable & Uncountable Nouns › ViewThere ___ we can do about that, I’m afraid.
A. isn’t very much
B. isn’t a lot
C. is hardly enough
Wh- Questions › View
A: ________ the word tiny mean?
B: It means very small.
A. Does
B. How does
C. What does
D. Why does
Subject Verb Agreement › View. Neither of the solutions (works / work) for the problem.
A. works
B. work
Few vs. Little › View
Let’s go outside for ___ fresh air.
a. a little
b. a few
