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.

Pertussis is highly contagious with symptoms that can linger six to ____ weeks.
ten

Some alternative antibiotics require ____ doses per day for ten days.
three

Complementary opposites are ____ colours juxtaposed on the colour wheel.

two

