下列各组词语中，没有错别字的一组是(　　)

Would you like some coffee—Yes, and please get me some milk, too. Iprefer coffee ____milk.

Lily has never been to Beidaihe, ________

f the students in the Occupy Central movement in Hong Kong ______ have participated for more rights, but what they did caused serious effects on people’s living.

Have you heard that the research he spent most of his time_______ perfect success