A number of people were reported to__in a series of explosions .A number of people were reported to__in a series of explosions on London's transport system on Thursday morning.A.had been killedB.have been killedwhy we choose

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A number of people were reported to__in a series of explosions .A number of people were reported to__in a series of explosions on London's transport system on Thursday morning.A.had been killedB.have been killedwhy we choose
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A number of people were reported to__in a series of explosions .A number of people were reported to__in a series of explosions on London's transport system on Thursday morning.A.had been killedB.have been killedwhy we choose
A number of people were reported to__in a series of explosions .
A number of people were reported to__in a series of explosions on London's transport system on Thursday morning.
A.had been killed
B.have been killed
why we choose

A number of people were reported to__in a series of explosions .A number of people were reported to__in a series of explosions on London's transport system on Thursday morning.A.had been killedB.have been killedwhy we choose
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