I（)English for about ten years.A、have studiedB、studiedC、studyD、have study

His parents _______ the US for ten years.A、have beenB、have gone toC、have been toD、have

For ten years the problem about the water has not been solved, we came to think that it ha

Why is the woman looking for some books about English？A．She is learning English literature

After the Restoration, ______ruled England for about 25 years.A．Charles IIB．Charles Cromwe

They have learned about （) in recent years.A. several hundreds English wordsB. hundred

The machine needs a complete ______ since it has been in use for over ten years.A．maintain