3. The director _____ traffic safety in his talk.
A. drew in

B. settled down

C. felt like

D. dwelt on

答案： D

draw in （天）漸黑，（白晝）漸短；（汽車或火車）到站

settle down 定居，過安定的生活；平靜下來；定下心來

feel like 想要

dwell on/upon 老是想著，詳述