2、ritingaletter,hedidn'tevenlookupwhenIcamein.答案:Absorbed beabsorbedin...“全神贯注于……”,此处为分词作状语,故填Absorbed。4.Thatyou________(expose)tothesunlightfortoolongwillbeharmfultoyourskin.答案:areexposed beexposedto...“暴露于……;接触……”。5.Thereisnosensein________(worry)aboutthefuture.答案:worrying The