These young trees twice a week .A. water B. watered C. are watered
His sister___________ her hometown for two years. She’ll return next year.
The old people ______lonely at all since we began to visit them once a week.
Eddie has lived here _____________four years ago.
—Where’s Daniel? —He___________ to Beijing.
—Where have you___________, Mike? I have ____________ to the library with my friends.