1. There was a ______ of activity among the fans when the famous singer arrived unexpectedly.

2. My plan to go to Japan ______ due to the Covid-19 travel restrictions.

3. Mr Lim is a fishing enthusiast. He keeps his fishing gear in his car so that he can go fishing ______ after work.

4. While listening to the long talk, Tristan struggled to ______ a yawn.

5. Moving all the children out safely will be of ______ concern in an emergency.