问题

Losing weight is no easy taskA lot of people who lost weight gain it back over time and end upback ____ they started.[ ]
A: when
B: where
C: since
D: after
B: where
C: since
D: after
正确答案是:
同类题型
How much ________the red socks –________6 dollars.
wyer listened with full attention, __________ tomiss any point.
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