______ you eat the correct foods ______ be able to keep fit and stay healthy.
A. Only if; you will B. unless; you will
C. Only if; will you D. unless; will you
______ you eat the correct foods ______ be able to keep fit and stay healthy.
A. Only if; you will B. unless; you will
C. Only if; will you D. unless; will you
C
考查倒装句。此处only强调的条件句置于句首，其后用部分倒装。