Choose the right variant.
, catastrophe.
a) did we know, would prevent
b) would we know, had prevented
c) had we known, would have prevented
d) should we know, had prevented
2.1 don't know . i wish name.
a) address, did not know
b) to address, knew
c) addressing, would know
d) to address, should know
3.1 look forward rest. if my head _ splitting.
a) having, feel, were
b) having, feel myself, were
c) have, had felt, were
d) have, am feeling, is