They____the train until it disappesr in the distance.A.saw B.watched C.noticed D.observed请详细解说

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They____thetrainuntilitdisappesrinthedistance.A.sawB.watchedC.noticedD.observed请详细解说They____thetrain

They____the train until it disappesr in the distance.A.saw B.watched C.noticed D.observed请详细解说
They____the train until it disappesr in the distance.
A.saw B.watched C.noticed D.observed
请详细解说

They____the train until it disappesr in the distance.A.saw B.watched C.noticed D.observed请详细解说
B 注视
A是看见,不延续
C注意到,意思不对
D观察,一般用于研究性质的看