There be …doing…
Great changes have taken place in…
sth is/are well worth v-ing.
It seems/seemed that…
It seems (im)possible to v…
It's an honor to…
I'm/We're not allowed to …
I'm afraid of making mistakes…
It is said that…
As the saying goes, …
…and …. are different in many ways.
，我们将会及时处理。
