SN4 ""

No	Pattern	Freq
1	it is [adj] [verb] that [art]	575
2	it is [adj] [verb] that [art]	565
3	it is [adv] [verb] that [art]	440
4	it is [adv] [verb] that [art]	414
5	it is important [verb] that [art]	164
6	it is important [verb] that [art]	164
7	it is [prep] [verb] that [art]	83
8	it is [prep] [verb] that [art]	83
9	it is worth [verb] that [art]	82
10	it is worth [verb] that [art]	82
11	it is interesting [verb] that [art]	61
12	it is interesting [verb] that [art]	61
13	it is generally [verb] that [art]	60
14	it is generally [verb] that [art]	60
15	it is also [verb] that [art]	48
16	it is also [verb] that [art]	48
17	it is often [verb] that [art]	44
18	it is often [verb] that [art]	44
19	it is well [verb] that [art]	41
20	it is well [verb] that [art]	41
21	it is now [verb] that [art]	40
22	it is now [verb] that [art]	40
23	it is difficult [verb] that [art]	36
24	it is difficult [verb] that [art]	36
25	it is widely [verb] that [art]	34
26	it is widely [verb] that [art]	34
27	it is sometimes [verb] that [art]	32
28	it is sometimes [verb] that [art]	32
29	it is reasonable [verb] that [art]	29
30	it is reasonable [verb] that [art]	29