求助各位高人为小弟指点GWD上的一道考题！！

mcyuyu · 发表于 2005-5-15 22:51:00

GWD最新题1套的32题：正确答案是啥and为啥？主句是否要加would? 这里的have是不是助动词？比较句than后是否加do？

To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

have to know a great deal more than now about the social and economic

have to know a great deal more than they do now about the social and economical

would have to know a great deal more than they do now about the social and economical

would have to know a great deal more than they do now about the social and economic

would have to know a great deal more than now about the social and economical

蓝夕叶子 · 发表于 2005-5-15 23:00:00

【发帖必读】 GMAT语法区版规 [

1 2 ]

本贴相关题目 OG-2017-SC-731 | GMATPrep-2008E2-SC-187 | TN-01-SC-32OG-2017-SC-731 |
OG-2016-SC-61 |
OG-2015-SC-42 |
OG-13-SC-42 |
OG-12-SC-41 |
GMATPrep-2008E2-SC-187 |
TN-01-SC-32
... (WDZZ)

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求助各位高人为小弟指点GWD上的一道考题！！