While students are doing group work, the teacher may tell them she/he is available for help and then grade papers at the desk.
(A)T
(B)F

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統計： A(12), B(28), C(0), D(0), E(0) #120419

詳解 (共 2 筆)

#153942

teacher can\'t leave students alone and do the checking at the desk while students are doing group work.
5
0
#97880
?

0
0