Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

[Q]: Phylogenetic analyses confirm ____ mitochondrial mallard clades.
[A]: two


[Q]: Red pandas have ____ toes that are widely separated and semi-retractable claws.
[A]: five


[Q]: Smoking is responsible for ____ out of five American deaths.
[A]:
one