4.
skill wave invite celebrate obvious volunteer optimistic
(1) On Christmas Eve,every family gathers to ______ the festival.
(2) If you have a(n) ______ attitude,you will always feel happy!
(3) As a ______ carpenter,he made all the furniture himself.
(4) Her eyes were red. ______ ,she was sad and had been crying for a while.
(5) Thank you for the ______ to the party and I will attend it.
(6) When the president went out of the plane,he smiled and ______ to the crowds waiting for
him.
(7) In the city marathon, ______ work in the stations along the way,serving the runners.