(A)when
(B) once
(C) which
(D) since
正确答案：D解答参考：D此题考察句型It has been…since that… 自从……以来有多久了【译文】从铁路建成以来有一个多世纪之久了。
How long() you() a member of the club?A.have,,joinedB.have,,beenC.has,,joinedD.has,,been
点击查看答案
I think the hatch covers ________ all fixed up by youA.wasB.wereC.beD.been
The number of the newly admitted students ______over 300, but a number of them ______not arrived yet.A. is, hasB. are, haveC. is, haveD. are, has
Why()the old block of flats()demolished next month?A、are…beingB、is…beingC、has…beenD、have…been
At last we got the letter we had long () expecting.A. areB. wereC. beD. been
He () some difficulty () the book into Japanese.A、is, to translateB、has, to translateC、is, in translatingD、has, in translating
She ___here a minute ago.A.isB. wasC.beD. been
