8.Handwritten documents are more valuable to researchers,historians say,______ their reliability can be confirmed.( )
A. | though | B. | so that | C. | while | D. | because |
7.-Is there anything wrong,Bob?You look sad.
-Oh,nothing much.In fact,I ______ of my friends back home.( )
-Oh,nothing much.In fact,I ______ of my friends back home.( )
A. | have just thought | B. | would just think | ||
C. | was just thinking | D. | will just be thinking |
5.The Environment Agency took over the role of flood warning from the police _____ had to go door to door to get the news out.( )
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A. | who | B. | which | C. | where | D. | / |