If you want to sell your product you must _____ it.
Good appearance and wealthy families are important in choosing a life-long partner, but not _______.
We should _______ the police to undertake a full investigation into the traffic accident, of which the witnesses gave different versions.
—Why din’t you come to my birthday party last night? —I was going to, but I was _______ occupied with something important.
Researchers found that people who drank excessively were twice as likely as those who drank regularly ______ ischemic(出血性) heart attacks.
—What do you think of her performance in the match?—He _______, but today was not his day.