The country life he was accustomed to________ greatly since 1992. 
#101373
A
has changed
B
change
C
changing
D
have changed
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At this time tomorrow ____over the Atlantic.
#99290
A
we’re going to fly
B
we’ll be flying
C
we’ll fly
D
we’re to fly
Experiments of this kind ___in both the U.S and Europe well before the Second World War. 
#102411
A
had conducted
B
have conducted
C
have been conducted
D
had been conducted