Music Term: - A group of five notes to be performed in the time of 4.?

Questions

In 1980 Soviet Premier ---------- Kosygin resigns, due to illness. ?

In 1980 Soviet Premier Alexei ---------- resigns, due to illness. ?

In 1983 241 US Marines and sailors die in a terrorist suicide attack on their barracks in---------- . ?

In 1989 ---------- years after Soviet tanks crushed the Prague Spring, Hungary declares itself a republic. ?

In 1989 33 years after Soviet tanks crushed the Prague Spring, ---------- declares itself a republic. ?