A.not to tell | B.not telling | C.telling not | D.not tell |
A.leaving | B.being left | C.having left | D.left |
A.Improving | B.Improve | C.To improve | D.To be improved |
A.belonged to | B.belonging to | C.which is belonged to | D.belongs to |
A.weighing | B.checking | C.taking | D.supposing |