The tourists can not help wondering ______ the ancient people could manage to complete the magnificent building without modern equipment.
#79027
A
that
B
how
C
where
D
what
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She was so angry at ____ he was doing ___ she walked out without a word.
#38297
A
what…that
B
that…what 
C
that…that  
D
what…what
I wonder_________it is worth_________. 
#39257
A
that, reading
B
if, reading
C
that, to read
D
whether, to read
He wanted to know _______
#38686
A
why he bought the present for
B
which room he lived in the hotel
C
who he had travelled with 
D
who has been chosen to be the chairperson