Countable vs Uncountable noun

I wonder how to climb trees without …

• branch

• branchs

• branches

• brancing

Stamped kitchen … are usually cheaper than forged kitchen ..

• knive

• knives

• knifes

• knitting

He cleaned up his kitchen sink after finding two …

• moice

• mouse

• mice

• mouses

To improve database efficiency, they use these …

• method

• methodes

• methoding

• methods

I love to visit both public and academic …

• libraries

• library

• librarys

• libraryes

How many … can we eat per week?

• egg

• eggs

• egges

• eggies

Which of these following sentences is wrong?

• A pin is needed to clip our documents.

• We bought three rods and two balls at a sport center yesterday.

• There are several mugs left inside our living room.

• I have so much apples to share.

Choose the answer a or an!

Please give me _______ cup of coffee with cream and sugar.

• an

• a

• --

Choose answer a or an!

.... university

• an

• a

• ----