The old man needs a ___________stick _________more steadily.
| A．to walk, to walk | B．walking, walking | C．walking, to walk | D．to walk, walking |
.The mayor of Beijing says that all construction work for the Beijing Olympics ＿＿by .
| A．has been completed | B．has completed |
| C．will have been completed | D．will have completed |
.After a fire broke out in the lab, a lot of equipment＿＿.
| A．is damaged | B．had damaged | C．Damaged | D．was damaged |
.Rainforests ＿＿and burned at such a speed that they will disappear from the earth in the future.
| A．cut | B．are cut | C．are being cut | D．had been cut |
.Sarah, hurry up. I’m afraid you wouldn’t have time to ＿＿before the party.
| A．get changed | B．get change | C．get changing | D．get to change |
.More patients＿＿ in hospital this year than last year.
| A．treated | B．have treated | C．had been treated | D．have been treated |