Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

According to the results of a survey which conducted by a USA magazine, there isn't really a generation gap.

There are both advantages and disadvantages of living in families with three or four generations, also known as ____ families.

When I agreed to help, I didn't know what I was __________ myself in for.

Let’s leave early, so we’ll be ahead of the rush of commuters. We can’t risk _______in heavy traffic during rush hour.

_______ Spring festival season in Vietnam starts with the Lunar New Year and closes with the celebration honoring the mythical founding fathers, ______ Hung Kings, on _____ tenth day of _______ third lunar month.

Friends will come and go in your life, but more important than ____ is your friends' acceptance of you for who you are.