DAVID HELPS HIS MOTHER WITH HER HOUSEWORK EVEY SATURDAY FOR ABOUT __.A:ONE AND HALF HOURSB:A HALF AND AN HOUR C:AN HOUR AND A HALF D:ONE AND A HALF HOURS

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DAVID HELPS HIS MOTHER WITH HER HOUSEWORK EVEY SATURDAY FOR ABOUT __.A:ONE AND HALF HOURSB:A HALF AND AN HOUR C:AN HOUR AND A HALF D:ONE AND A HALF HOURS

DAVID HELPS HIS MOTHER WITH HER HOUSEWORK EVEY SATURDAY FOR ABOUT __.A:ONE AND HALF HOURSB:A HALF AND AN HOUR C:AN HOUR AND A HALF D:ONE AND A HALF HOURS
DAVID HELPS HIS MOTHER WITH HER HOUSEWORK EVEY SATURDAY FOR ABOUT __.A:ONE AND HALF HOURS
B:A HALF AND AN HOUR C:AN HOUR AND A HALF D:ONE AND A HALF HOURS

DAVID HELPS HIS MOTHER WITH HER HOUSEWORK EVEY SATURDAY FOR ABOUT __.A:ONE AND HALF HOURSB:A HALF AND AN HOUR C:AN HOUR AND A HALF D:ONE AND A HALF HOURS
D:one and a half hours 一个半小时
C.如果前面的an改为one才是对的.这种句式“一个小时”不能用an hour,而要用one hour.

选D,其实这个表达方法有两种,一是后者,一是one hour and a half

D

c 相当于 one and a half hours.

选D

D

D

D

D