He didn't know how difficult the work was ________ he began to do it.
A.unlessB.sinceC.becauseD.until在线课程D
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- 2026-04-24He didn't know how difficult the work was he began to do it.A.unlessB.sinceC.becauseD.until
- 2026-04-24I was thinking of this I heard my name .A.while; calledB.as callingC.when; calledD.when; call
- 2026-04-24As there is no more food in the house, I'm going out to buy some.A.leaveB.leavingC.to leaveD.le
- 2026-04-24The rain stopped the boys football.A.playingB.to playC.playedD.to playing
- 2026-04-24I don't think the question of they are old or young is important.A.whichB.whetherC.howD.why
- 2026-04-24We must start dawn if we want to arrive on time.A.inB.onC.atD.from
- 2026-04-24It's going to be some time before they a severe illness.A.recover fromB.recoverC.will recover f
- 2026-04-24These children are still a disease unknown to man.A.suffering a lot ofB.suffering a lot fromC.being