[ Vocabulary ]
Which word means the way an organism acts or responds to its environment?
A. behavior
B. life cycle
C. mate
D. species

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Grammar › ViewThat bicycle is his, but the skateboard is __________.
A. mine
B. hers
C. ours
D. its
Grammar › View
The wall is still wet from the paint so remember not to lean ______ the wall.
A. on
B. against
C. at
Distinguishing Future Tenses › ViewI stayed in Tokyo for ______ weeks.
A. a few
B. a little
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I have studied English ……… 9 years.
A. for
B. since
