it is normal for parrots to talk, Einstein, a small bird, is unusual in that whenever she hears a new word or sound, she repeats it over and over until she masters it.
#30576
A
As
B
When
C
While
D
Since
推荐题目
She walked home by herself at night, _____ she knew that it was dangerous.
#32080
A
once
B
as
C
unless
D
although
–-- I’m afraid you’d better go to the seaside and enjoy a good holiday．---I can’t follow your advice, ____, thank you very much．
#31760
A
instead
B
therefore
C
nevertheless
D
besides
A dozen ideas were considered____the chief architect decided on the design of the building．
#80001
A
because
B
before
C
whether
D
unless
I borrow the book Sherlock Holmes from the library last week, ______ my classmates recommended to me..
#30015
A
who
B
which
C
when
D
Where