was it 8 o'clock _____you heard someone _____ at the door?a.when;knockingb.when;knockc.that;knockd.that;knocking请略解

It was eight o'clock when I ___ the station. It was twelve o'clock ___ they finished the work.A.sinceB.whichC.thatD.when it was ten o'clock ___ we got home last nightA.that B.when C.since D.until ___ is piano lesson?It's at four o'clock. It was ten o'clock then.(用ten o'clock进行提问）What time --------- It's [8 o'clock]对8 o'clock提问.对8 o'clock提问. 改错:It was not 8 o'clock until he arrived home . it was at 8 o' clock yesterday evening _____ the electricity was cut off.a,when b,untilc,thatd,which It was eleven oclock when she finished her homework.原意She____finish her homework____it was eleven oclock last night. Did he come back early?Yes.It was not yet eight o'clock ___ he arrived homeA before B when选B 为什么不选A 3.The door of the shop remained ___,though it was ten o’clock am.A.opened B.opening C.locked D.locking it was 8 o Our ___(one) class starts at 8'o clock. Was it 8o'clock -----you heard someone------at the doorA.when knockingB.when knockC.that knockingD.that knock was it 8 o'clock _____you heard someone _____ at the door?a.liked b.wished c.meant d.expected it was about 500 years ago _____ the dream came true是强调句型没错“It is 8 o'clock when. It is at 8 o'clock that有什么关系么 It was three o'clock ten minutes ago.What will it be an hour's time? It's 12 o'clock now.What time was it 25 hours ago?