55._________A. hyB. withC. aboutD. of

They had a pleasant chat ______ a cup of coffee.A．forB．withC．duringD．over

Exposure of the body ______ strong sunlight can be harmful.A．ofB．withC．toD．by

The park was______easy walking distance of our hotel.A．withinB．insideC．aboutD．from

55._________A. onB. withC. aboutD. in

_________(55)A.by B.withC.about D.of

_________(55)A.by B.withC.about D.of