We are looking forward to the day ________ they will be back.
A.in which B.that
C.which D.when
We are looking forward to the day ________ they will be back.
A.in which B.that
C.which D.when
D
本句是要表达“我们正盼望着他们回来的那一天”。 the day后面引导一个定语从句，根据句子意思，先行词the day在从句中应该作时间状语，所以该用when来作连接词。A项应是on which才正确，因为我们常说“They will be back on the day”而不是 “in the day”。