A.had | B.have | C.have had | D.will have |
A.will be built | B.be built | C.shall be built | D.are to be built |
A.must | B.need | C.may | D.will |
A.bought; to buy | B.buy; buying | C.would buy; to buy | D.bought; buying |
A.will pass | B.would pass | C.pass | D.must pass |
A.stay | B.stays | C.must stay | D.would stay |
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