ann felt worried ...her birthday party.介词填空
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annfeltworried...herbirthdayparty.介词填空annfeltworried...herbirthdayparty.介词填空annfeltworried...herbirt
ann felt worried ...her birthday party.介词填空
ann felt worried ...her birthday party.介词填空
ann felt worried ...her birthday party.介词填空
正确：about
be/feel worried about sth.担心……