作业帮22.The students are called ________ one by one to take the exam.A.inB.upC.onD.off
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22.The students are called ________ one by one to take the exam.A.inB.upC.onD.off
22.The students are called ________ one by one to take the exam.
A.
in
B.
up
C.
on
D.
off
22.The students are called ________ one by one to take the exam.A.inB.upC.onD.off
选A,call in 要求的意思