1 . There is a big change from the late 1970s in China, ______ people first began leaving China for study and work.
A.where | B.which |
C.when | D.from which |
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13-14高一上·江苏南通·期中
2 . Between the two periods of classes is a break, _______ we can have a short rest.
A.then | B.where | C.when | D.which |
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