SHE HELPED HER MOTHER _______ THE HOUSE CLEAN. A. KEEPING B. TO KE...

91. - DAP AN TIENG ANH CONG CHUC QUANG NGAI 2017
DAP AN TIENG ANH CONG CHUC QUANG NGAI 2017

91. She helped her mother _______ the house clean.

A. keeping B. to keep

C. keep D. B&C are correct

Help + (O) + to V

Help + (O)+ Vo