A(n) ________ can filter 50 gallons of water a day.
Beijing has three million _______ that are looked after by robot nannies.
Starfish have ______ on the tips of their arms.
15% of the air on the New York subway contains _____________.
Paul McGuigan, the original bassist in Oasis, quit the band by _____.
Netflix’s biggest competitor is _______.
In 2016, a gorilla escaped at London Zoo and drank five litres of _______________.
1,400 wrens weigh as much as one __________.
The world’s fastest ___________ travels at 47 mph.
The most murderous mammals are ____________.
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