________ the morning of the wedding ceremony, the bride and groom have to serve tea to their parents.
| A．In | B．At | C．To | D．On |
.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 |
The officers narrowly escaped ___________ in the hot battle.
| A．have killed | B．to kill | C．to be killed | D．being killed |
. ___________ the letter, he went out to post it.
| A．Writing | B．Being writing | C．Having written | D．Written |