______ by many well-known experts and film stars, the product was very popular at one time.
| A．To advocate | B．Having advocated | C．Advocating | D．Advocated |
The old man's ______ pity on the snake led to his own death.
| A．take | B．taking | C．being taken | D．have |
It is no good ______ today's work for tomorrow.
| A．to leave | B．leaving | C．that you leave | D．leave |
It's no use______ with him. You might as well ______ with a stone wall.
| A．arguing, argue | B．to argue, arguing | C．arguing, arguing | D．to argue, argue |
I couldn't understand ______ at the poor child.
| A．you to laugh | B．you laugh | C．why laugh | D．you laughing |
We can't understand ______ a decision until it is too late.
| A．him to postpone to make | B．his postponing to make |
| C．him to postpone making | D．his postponing making |