—All the building materials have been washed away.
—So I have heard. But there was no sign ____ a heavy rain was on the way last night.
A.when | B.that | C.which | D.If |
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—All the building materials have been washed away.
—So I have heard. But there was no sign ____ a heavy rain was on the way last night.
A.when | B.that | C.which | D.If |