We have to ______ tools for our projects by Friday.
A. decide
B. choose
C. miss
D. hang out
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I felt ______ and shy around the new students.
A. safe
B. decent
C. miss
D. awkward
Tom was happy with the ______ grade he received on his exam.
A. decent
B. awkward
C. wonder
D. safe
构成零件几何特征的()、()、()统称为几何要素(简称要素)。