问题补充：
he is too tired,but he still carries on （ ）his workA.to B.with C.at D.inHe couldn go to the park （）his bad legA.because B.because of
答案：
he is too tired,but he still carries on （ to）his work
He couldn go to the park （ because of ）his bad leg
======以下答案可供参考======
供参考答案1:
第一个选D,第二个选B
