He is busy.He keeps ____ these days. A work B to work C works D w_英语解答

He is busy.He keeps ____ these days. A work B to work C works D working 要理由.

人气：421 ℃　时间：2019-08-22 20:30:54

解答

D
固定短语：keep doing sth
句意是：他很忙.这些日子他一直在工作.