Singular nouns and Plural nouns

There are many ________ in the sea.

Ahmad bought ten (a)   (box) of tissue. Write in Plural nouns.

I have two washing (a)   (machine) at home. Write in Plural nouns.

Please wash these (a)   (knife). Write in Plural nouns.

The old man had misplaced his bunch of (a)   (key). Write in Plural nouns.

My father chopped down three coconut (a)   (tree) that were in front of my house. Write in Plural nouns.

I have been home for more than 21 (a)   (day). Write in Plural nouns.

I have not touched any of my (a)   (book). Write in Plural nouns.

There are three ______ (cow) and two _______ (goat ) in my farm. Write in Plural nouns.

(a)  

Please answer all the (a)   (question) before you submit your paper. Write in Plural nouns.