_____ people have died of AIDS (艾滋病) since 1981.

thstoodbesidethewindow,hisattention____thecaroutside.

.—Have you finished your fashion design—Not yet. I’ll finish it if I__ten more minutes.

The old man was taking a walk, ________ by his grandson [ ]

Excuse me, but could you tell me ? I’d like to drop him a line.