We should try to get a good sleep __________ much work we have to do.
A. however
B. no matter
C. although
D. whatever
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They are told that they should follow the main road ________they reach the university.
A. whenever
B. until
C. while
D. wherever
用恰当的并列连词完成句子: Do it yourself ____(或者)ask somebody else to do it.
用恰当的并列连词完成句子: This sentence may be correct grammatically, ____(但是)a native speaker never says it that way.