Hardly——down——he stepped in.
A.had I sat; than  B.I had sat; with  C.had I sat; then D.had I sat; when 為什么不能選C?
——ghost exists in the world.That's your illusion.
A.Not such a thing as B.Not such a thing as a C.Not such thing as a D.Not such thing as為什么不能選D?為什么一定要有a?
They ——so tired if they ——for a whole day.
A.wouldn't feel; didn't walk
B.wouldn't feel; weren't walking
C.wouldn't be feeling; weren't walking
D.wouldn't be feeling; hadn't be walking為什么不能選B?感受不是被動呀?
If——their terms,we would go bankrupt.
A.we accept B.we should accept C.we had accepted D.we are to accept為什么不能選C?選什么?