er to do something meaningful, it’s necessary that you _______ determine what is really important.

180. The monkey came down and _______ onto the elephants back.

Scientists are convinced ______ thepositive effect of laughter ______ physical and mental health.

may have different opinions about Karen,but I admire her______, she is a great musician

Mum, would you please buy me an MP5 player? — If you can help do the dishes the whole vacation, you ______ have one as a reward.