WASHING MACHINES, VACUUM CLEANERS, AND DISH WASHERS ARE LABOR ___...

35. - File thứ 3: anh12new_231201916
File thứ 3: anh12new_231201916

35.

Washing machines, vacuum cleaners, and dish washers are labor _______ devices which help us do housework

easily and quickly.

A.

improving

B.

making

C.

saving

D.

employing