题目

 —How was your trip to Pingyao?    —It _____ have been better.    A. won’t                  B. needn’t           C. mustn’t         D. couldn’t    答案： D。It couldn’t have been better再好不过了。  He lost both of his parents in the big earthquake, but ________ for him, a kind couple adopted him and took good care of him. [     ]A. suddenly  B. naturallyC. obviously  D. luckily