The Caspian Sea is ______ than any other salt lake in the world．（ ）
A．deepB．deeperC．deepest
Many teenagers ________ the old and they often offer their seats to them on buses．（ ）
A．depend onB．care forC．laugh atD．listen to
What's the meaning of the activity"Let's Save"？
Paper shouldn't ________ in everyday life．（ ）
A．wasteB．wastedC．be wastedD．is wasted
When you are tired，________ in the countryside is a wonderful experience．（ ）
A．relaxingB．relaxedC．relaxD．relaxes
﹣Mom，I will eat less fast food this year，believe me．
﹣If you make a ________，you must keep it．（ ）
A．jokeB．noiseC．mistakeD．promise
Alice，please turn down the music，I ________ an important phone now．（ ）
A．answerB．answered
C．have answeredD．am answering