[ Vocabulary and Grammar ]
Scientists _______researches about new medicines
A. do
B. come up
C. make
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Grammar › ViewChoose the correct spelling.
A. need’nt
B. neednt
C. needn’t
Grammar › View
The watch costs more now _____ it did two weeks ago.
A. then
B. than
Some vs. Any › ViewNid must do ……… homework tonight.
a. some
b. any
Grammar › View
In the 20th century, many African countries gained independence ____________ European countries that had previously ruled over them.
A. from
B. for
C. to
D. into