Clues are all activities or pastimes we may have done in lockdown
No. 1. These may have started the argument (10)
No. 5. Looks like the wound is on the mend (8)
No. 13. Create sticky stuff to hold up vehicles (4/3)
No. 15. Three characters show solo initiative (3)
No. 18. Like a stamp, stay in the corner and travel the world(7/5)