(27) Not only( ),butthey stayed until the end of the party.
①they go ②cthey went (Gid they go ④①havethey gone (関東学院女子短犬)
(@8) Not until a stadent has mastered algebra( )tounderstand the prineiples of physicB.
Ohe or she can begin (⑳can he or she begin he or she begins ①begine (東交大)
(G9) On the wall opposite the door ( ) three paintinge.
① were ②hanging (③ displayed ④ displaying