.
. ---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.If | C.which | D.that |
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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.If | C.which | D.that |