—How was your trip to Pingyao?
—It _____ have been better.
A. won’t B. nee
dn’t C. mustn’t D. couldn’t
—How was your trip to Pingyao?
—It _____ have been better.
A. won’t B. nee
dn’t C. mustn’t D. couldn’t
D。It couldn’t have been better再好不过了。