It’s _________ hard problem for the twins that ________ of them can work it out . 
#37180
A
so, neither
B
such a, none
C
so a, neither
D
such a, neither
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- ________ book is this?-- It's Mary's.
#42820
A
Whose
B
Where
C
How old
D
How many
     delicious the roast beef is !
#38824
A
What
B
How
C
What a
D
How a
Just like weather, life _________ be beautiful all the time.
#40412
A
mustn’t
B
needn’t
C
can’t
D
wouldn’t