Almost half of the watermelon ____eaten A,has B.has been C.have D.have beenJim likes doing ____ in that lab (experiment)The space ____have just made a successful landing on the moon(travel)

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Almost half of the watermelon ____eaten A,has B.has been C.have D.have been
Jim likes doing ____ in that lab (experiment)
The space ____have just made a successful landing on the moon(travel)

1.B
2.experimentation
3.traveller

B,experiment,traveling

has been; experiments; travelers

B
experiemnts
travellers