1.There be …doing…
2.Great changes have taken place in…
3.sth is/are well worth v-ing.
4.It seems/seemed that…
5.It seems (im)possible to v…
6.It’s an honor to…
7.I’m/We’re not allowed to …
8.I’m afraid of making mistakes…
9.It is said that…
10.As the saying goes, …
11.…and …. are different in many ways.
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