He found it hard for Alan to focus on his teachers for longer than five minutes, _________ if the lecture was boring

________a pianist，I had to sing solo.Much to my relief，my performance was fully appreciated by theaudience.[ ]

We are now enjoying the cool air in the room . _____ ，the farmers are harvesting crops in the hot sun .

This is the _________ spot on whichthe first pilgrims landed in America.

Astrong-willed person may_____the targets he or she set for themselves whateverthey are.