I AM THIRSTY. (Correct)

MY MOM WASHING A CUP

> My mom is washing the cup

WE CLEANING A GUN.

> We are cleaning the gun.

                                                  
"PLEASE HELP ME" (Correct)

GARDEN IS LARGE PLACE.

>Garden is a large place.

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Hello Nicky!

            Thank you for doing  your homework. I really commend you for being active and obedient kind of student.  Any way, here are your corrections Nicky for your homework.

    Please study the usage of IS/ ARE in a sentence. We can use is and are as helping verbs or main verbs.