Up and to are always two separate words. There is no such word as upto.
they can have upto two babies but the average is one
It is used as one word.
no it is not an one word it is of two word
I think the word "ongoing" is only one word, but it has two syllables that are two separate words.
Hipbone is one word.
The word "hairbrush" is typically written as one word, not two.
One word, two syllables
It is one word.
one word
It is one word.
"Hardworking" is one word.
Toenail is one word.