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Anh văn bằng C-114
1) Betty must by now.
a) has arrived
b) arrive
c) have arrived
d) be arriving
2) ����. born, a baby kangaroo measures less than
three inches in length.
a) One is
b) When is one
c) Is one
d) When it is
3) Michael Faraday made a great discovery
that electricity can be made to flow in a coil of wire.
a) when he found
b) to find
c) was found
d) he found
4) You so much; we still have plenty of food.
a) don't have to buy
b) needn't buy
c) needn't have bought
d) shouldn't buy
5) Solid-fuel engines are simpler than liquid-fuel engines,
have important uses.
a) both of them
b) so both