-----Alice looks blue today.-----Yes, I asked her, but she wouldn’t say _____ troubled her.
#59079
A
why was it that
B
that was why
C
it was what
D
what it was that
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---What do you think made the woman so upset?--- _____ weight. 
#4811
A
As she put on
B
Put on
C
Putting on
D
Because of putting on
We must keep our room clean, for dirt and disease go______, you know.
#4919
A
hand in hand
B
step by step
C
from time ti time
D
one zfter another