9.I'm glad you've made great progress so far.Keep it up______ you must be successful.( )
A. | and | B. | while | C. | so | D. | or |
8.---Tommy is planning to buy a car.
---I know.By the time he returns from abroad,he ________ enough for a used one.( )
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---I know.By the time he returns from abroad,he ________ enough for a used one.( )
A. | will have saved | B. | saves | C. | had saved | D. | will save |