It must be morning, ____ the birds are singing.
A. for
B. because
C. as
D. since
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_____ you may do, you must do it well.
A. Which
B. Whenever
C. Whatever
D. Whoever
Everything went on as usual _____ nothing had happened.
A. as such
B. as if
C. as
D. like
It was ____ everyone went to the beach.
A. such a hot weather that
B. a so hot weather that
C. such hot weather that
D. too hot weather that
_____ they will go there to try another experiment hasn't been decided yet.
A. Whether
B. If
C. Why
D. Where
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