Making comparison

Mr. Chan has ...(more/the most) knowledge of computers than Mr. Wong. 

Can you put ...(less/ fewer) sugar in my lemon tea?

Among all the friend, Martin bought ...(the fewest/ the least) cash to school

The vacuum cleaner can save ... (more/ the most) energy among the three models.

My finger is (not long) as your finger.

I can run ...(fast) my brother.

Maria looks fat. She is... (not slim) her sisters

I have not tried this restaurant for a long time. I think it is ...(not good) it used to be.

When Mo Sir was young, he could run ...(fast) me.

Issac has ... (more/ the most) pencils among the three brothers.