Itisnecessarythatthestudents____moreexcercisestodo.
A、haveA
【句意】學生們有必要做更多的練習。
【難點】虛擬語氣可以用于主語從句中，常用的句型為：It +is(was)+形容詞that…，主語從句中的謂語用(should)+v.的表達形式。
Idon’thaveas______moneyasbefore,butmylifeismore______.
Mr.Greenisusedto_________twoapplesafterluncheveryday.
Thereis______littleinformationabouthimthatwehave______muchdifficultyfindinghim.
Iam____gratefulforthemanykindnessesyouhaveshownmyson.
Nowherebutintheremotestregionofthecountry____findaplacetosettledown.
