国外某买主向我公司来电：“接受你方12日发盘请降价5%”，此来电属交易磋商的哪一环节（）
A.发盘
B.询盘
C.还盘
D.接受
参考答案：C
To save class time，our teacher has ________ students do half the exercise in class and complete the other half for our homework.
A．us
B．we
C．our
D．ours
A．
B．
C．
D．
