How is Lucy getting on with her lessons？
She won't catch up with others____ she studies harder．（ ）
| A． |
unless |
B． |
as soon as |
C． |
if |
How is Lucy getting on with her lessons？
She won't catch up with others____ she studies harder．（ ）
| A． |
unless |
B． |
as soon as |
C． |
if |
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