adj.
1) ~ for, to (their aid is ~ to our success)
2) ~ to + inf. (it is ~ to be prepared for any eventuality)
3) ~ that + clause; subj. (it is ~ that we be/should be kept informed of all developments)
adj.
1) ~ for, to (their aid is ~ to our success)
2) ~ to + inf. (it is ~ to be prepared for any eventuality)
3) ~ that + clause; subj. (it is ~ that we be/should be kept informed of all developments)
The Bbi combinatory dictionary of English, a guide to word combinations. Комбинаторный словарь английского языка Bbi. Руководство по словосочетаниям. 2012