17 . If we ........ baby-sitters , we ......... out more often , but we prefer to leave our children in the care of our parents , whom we don ' t want to bother too often . A ) have trusted / had göne B ) trust / would have gone C ) can trust / might have gone D ) had trusted / will go E ) trusted / could go
20 . The weather was beautiful as I left home , so I didn ' t think of bringing my umbrella . I wish I ......... the weather forecast , so I .......... that it was going to rain . A ) was watching / should know B ) could watch / had known C ) had watched / would have known D ) watched / knew E ) watch / will have known
18 . If Florence Nightingale ............ alive today , I ' m sure she ............... very impressed with the current standard of nursing care in the majority of the world . A ) were / would be B ) was / could have been C ) is / will be D ) has been / might be E ) could be / was
19 . Measures to combat global warming ............ if all countries ......... on a solution together . A ) will fail / don ' t work B ) will be failing / didn ' t work C ) must fail / hadn ' t worked D ) would be failing / haven ' t worked E ) had failed / couldn ' t work
1 . E 2 . D 3 . E 4 . A 5 . B 6 . D 7 . A 8 . C 9 . E 10 . B 11 . B 12 . C 13 . D 14 . A 15 . D 16 . C 17 . E 18 . A 19 . A 20 . C