ⅰ.单项填空
1．—it looks heavy.can i give you a hand?
—________.
a．no, thanks b．yes, my pleasure
c．no, never mind d．yes, i do
2．(2014·福州市高中毕业班质量检查)across all media, people are debating about ________ we need to keep track of every school bus on china's road.
a．how b．whether
c．which d．where
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