My apologies again, I'm new to this so thank you for your patience.
1 across Leave by means of space flight, ??????S?O?
20 across Linguist ultimately made sense of verb forms, ????E?
60 across Laments having little time to make runs, M???N?
65 across Various agencies can ignore military blackade, ??E??
73 across No French coin fit to use- it's true, N???????O?
Many thanks again.