The pursuit of happiness is just a/an________of personal choice.

In our daily life, everyone fails every now and then. It is how you react that makes a_______.

As a candidate, you must make a good _______ on everyone you meet if you want to win the election.

---Is there any _______ to the time about how long I can stay here?---Yes, you must leave here before he comes back.

According to the recent research, heavy coffee drinking and heart attack is not necessarily      and effect