----------- did you watch TV?—About two hours.A.How far\x05\x05B.How often\x05\x05C.How soon\x05\x05D.How long

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----------- did you watch TV?—About two hours.A.How far\x05\x05B.How often\x05\x05C.How soon\x05\x05D.How long
----------- did you watch TV?—About two hours.
A.How far\x05\x05B.How often\x05\x05C.How soon\x05\x05D.How long

----------- did you watch TV?—About two hours.A.How far\x05\x05B.How often\x05\x05C.How soon\x05\x05D.How long
D
1.how long
指多长时间,主要用来对一段时间(如three days,four weeks 等)提问:
“How long did he stay here?” “About two hours.” “他在这儿呆了多久?”“大约两小时.”
2.how often
指每隔多久,主要用来对频度副词或状语(如once a week等)提问:
How often does he come here?—Once a month.
他(每隔)多久来一次?—一每月一次.
3.how soon
指再过多久,主要用来对表示将来的一段时间(如in an hour,in two weeks 等)提问:
How soon will he be back?—In an hour.他要多久才回来?—1小时以后.