_______ in thought, he almost ran into the car in front of him.
A、LosingC
这里分词短语的意义应为“Ashewaslostinthought”，意为“由于陷入沉思”，这儿填入过去分词短语，表示一种状态，用作原因状语。
Whycouldn’tyou________ananswerwhenIaskedyouwhyyouwerelate?
_______hegoes,shewillgo,andshenevercares_______happens.
Scientistsdoubtwhetherit’s________toregulateone’sbiologicalclockbydrinking.
Pleasewriteareport________theabovesubjectsaretobecovered.
Touristexpenditureshavedifferenteffectsonadestinationeconomy:salesbyfoodvendorstorestaurantsare_______effect;whiletaxifaresandairlineticketsalesare_______effect.
