All of the flowers now raised here have developed from those _____ in the forest.    
#73491
A
once they grew
B
they grew once
C
that once grew
D
once grew
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2. --- Give me a call as soon as you ______ in Hainan. --- OK, I will
#40971
A
arrive
B
have arrived
C
will arrive
D
arrived
Don't worry about ___ haven't arrived yet.
#71583
A
whatever
B
whoever
C
whenever
D
whomever
 He left Europe _____ World war II broke out.
#71966
A
during
B
the year
C
while
D
there