Lessons can be learned to face the future, ________ history cannot be changed.
#30007
A
though
B
as
C
since
D
unless
推荐题目
I really wonder ______ he has posted me many parcels _____ we worked together .
#80505
A
how ; after
B
why ; when
C
when ; before
D
why ; since
She didn't go to the party last night, ______ she had to finish her term paper.
#80446
A
if
B
though
C
till
D
because
This is the concert hall ________ he has given very successful performances.
#34127
A
where
B
which
C
that
D
when
_____earth scientists understand how and why earthquakes happen, forecasts are usually inaccurate.
#32029
A
As
B
While
C
Because
D
If
______ they live in the same house, we would no trouble finding them.---But as traveling salesmen as well as seasonal herdsmen and farmhands, as you know, they move house _______ many of the Americans who live on wheels.
#34580
A
As far as; as often as
B
As well as; as well as
C
As long as;;as often as
D
As long as ; as far as