1. I received a letter
my friend.
С. in
D. from
A. to
B. on
2. He is a hard- working student who always ..
A. received
3. Bell demonstrated his.
.. good grade.
(9 gets
to the public at countless exhibitions.
C. inventing
B. got
D. getting
A. to invent
B invention
D. invented
4. Differe ...
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