Shall we go to the amusement park this Sunday, mum—- Sure, ________ I am busy.

Thanks is a common _____ used in English.You can never use it too much.

对下列两组句子中加点的词意义理解正确的一项是（ ）映阶碧草自春色/天生丽质难自弃 三顾频烦天下计/君臣相顾尽沾衣

You should be _________ of your ______ behaviour.

What really brings us together is a(n) ______ purpose to protect wildlife from being destroyed.[ ]