__________you eat the correct foods ________ be able to keep fit and stay healthy.
| A．Only if ; will you | B．Only if ; you will | C．Unless; will you | D．Unless ; can you |
相关试题
Father never lets us when talking to us.
| A．cut in | B．cut down | C．cut off | D．cut up |
Americans eat vegetables per person today as they did in 1970.
| A．more than twice | B．as twice as many |
| C．twice as many as | D．more than twice as many |
Madam Curie won two Nobel Prizes for her scientific .
| A．observation | B．achievement | C．determination | D．consideration |
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