In the following words， which underlined（划线的） letter has a different sound from the others？（ ）
| A． |
duck |
B． |
brush |
C． |
human |
To my surprise，my grandma suddenly asked me ________ get the"Red Packets"on QQ．（ ）
A．that she couldB．how she could
C．what could sheD．whether could she
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