She often spends half an hour_____ sports.A.to do B.doing C.do D._其他解答

She often spends half an hour_____ sports.A.to do B.doing C.do D.on doing

人气：209 ℃　时间：2019-09-29 06:21:48

解答

B.doing
spend time (in) doing sth. 花时间做某事
spend time on sth. 在某事上花时间