19.A. spread B. dropped C. poured D. covered
18.A. kinfe B. hand C. letter D. key
17.A pile B. set C. lot D.piece
16.A. towards B. away from C. from behind D.near
15.A. Putting down B. Laying aside C. Picking up D.Taking away
14.A. the next moment B. for a while C. in time D. at once
13.A. cooking B. making C. burning D.serving
12.A. appear B. follow C. happen D. continue
11.A. pushing B. letting C. pulling D. leading
10.A. Therefore B. However C. Instead D. Again