________ 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; you will |
After the recovery, he decided to send his thanks to the doctor, who ________ him ________ the disease.
| A．treated; for | B．cured; for | C．cured; of | D．treated; of |
________ of being involved in the attempted murder, she was questioned by the police.
| A．Convinced | B．Suspected | C．Charged | D．Confirmed |
Though the situation is rather serious, financial leaders are still ______ about global economy.
| A．positive | B．negative | C．active | D．passive |
Do remember to be________. We must avoid any possible risks when doing this dangerous chemical experiment—burns, poisonous gases or cuts from broken tubes.
| A．curious | B．thoughtful | C．considerate | D．cautious |