Find one error in each of the following sentences (A, B, C or D)

It is much easier for a foreigner to become an American citizen if he has a close relative whoever is already an American. 

The package must be wrapped carefully before it is post.

Do you think two hours are too long to wait for someone?

My mother still spends 14 hours a day do the housework.

The better you are at English, more chance you have to get a job with international organizations.

Either the doctor or the nurses takes care of changing the patients’ bandages.

I can’t stand make noise in class. Would you please do something?

My father used to giving me somegood advice whenever I had a problem.

George hasn’t completed the assignment yet, and Maria hasn’t too.

Today was such beautiful day that I couldn’t bring myself to complete all my chores.

I often look into new words in the dictionary whenever I don’t know their meanings.

The price of gold depend son several factor, including supply and demand in relation to the value of the dollar.

One of the most popular holiday in the U.S is Thanksgiving, which is celebrated in November.

They hardly never go to the beach because of their thickness, do they?

She asked why did Mathew look so embarrassed when he saw Carole.

Although his family is poor, but he studies very well.