A.so nice a weather    
B.such a nice weather
C.such nice weather  
D.so a nice weather

A.so that
B.so
C.because
D.soon

A.if
B.even if
C.as if
D.if only

A.will not have seen
B.will not see
C.has not seen
D.had not seen

A.as human
B.as if they were human
C.as though they are human
D.as they are human

A.No sooner
B.As soon as
C.While
D.Before

A.before
B.until
C.when
D.as long as

A.Before / when
B.After / until
C.As far as / before
D.While / till

A.After
B.Until
C.Before
D.While

A.as soon as the meeting will begin
B.by the time the meeting begins
C.as long as the meeting would begin
D.after the meeting began