单项选择题

By the time this talk is over, we ______ a lot about the earth.
A) shall be learning C) would learn
B) are learning D) shall have learnt

A.By the time this talk is over, we ______ a lot about the earth.
B.shall be learning
C.are learning
D.would learn
E.shall have learnt
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单项选择题
I'm leaving tomorrow, but I haven't packed my suitcases yet.
A.直到我打算明天走时, 我才发现我的手提箱还没有塞满。
B.我准备明天出发,但是我发现我的手提箱还没有塞满。
C.直到我打算明天走时, 我才发现我的手提箱还没有收拾好。
D.我准备明天出发,但是我还没有收拾好箱子。
单项选择题
Develop is only cheaper when you're doing a lot of enlargements.
A.当你做了一些放大工作之后,冲洗费只会更便宜。
B.当你做了一些放大工作之后,开发费只会更便宜。
C.如果你要放大的照片数量大,冲洗费只会更便宜。
D.如果你要放大的照片数量大,开发费只会更便宜。
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