31.   Workers in a central office screen each call, assign a prior ity and decide whether the charge is serious enough to investigate.

32.   Overwhelmed by the attention, he called a family friend, a lawyer, to help him screen calls.

33.   She suggested that people worried about their parents getting scammed give them an answering machine and make sure they use it to screen calls.

34.   The players have been barred from making telephone calls while officials will screen the calls they receive.