On the surface of the water________, which spoiled the beautiful scenery of the park.
#81945
A
some dead leaves did float
B
did float some dead leaves
C
floated some dead leaves
D
did some dead leaves float
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______, they couldn’t solve the mystery.
#84549
A
Tried hard as they
B
Hard as they tried
C
Tried as they hard
D
They tried hard as
Only when the fire was under control       to return to their homes.
#82459
A
the residents would be permitted   
B
had the residents been permitted
C
would the residents be permitted
D
the residents had been permitted
—Are you going to see the film with us?—If Mary wants to go,_______.
#83742
A
so do I
B
so will I
C
I also go
D
so I will