请英语高手帮我做7道英语题*45.Identifytheerrorsinthefollowingsentences:Wedidtheresearchasgoodaswecould;however,itdidnotturnouttobesatisfactory.[1分]（A）.did（B）.asgoodas（C）.however（D）.turnout*48

　　请英语高手帮我做7道英语题

　　*45.Identifytheerrorsinthefollowingsentences:Wedidtheresearchasgoodaswecould;however,itdidnotturnouttobesatisfactory.[1分]

　　（A）.did（B）.asgoodas（C）.however（D）.turnout

　　*48.Identifytheerrorsinthefollowingsentences:Bytheyear2010,theearthwillhaveinhabitedtwiceofmanypeopleasitistoday.[1分]

　　（A）.Bytheyear2010（B）.twice（C）.of（D）.itis

　　*49.Identifytheerrorsinthefollowingsentences:Theoldmanisinthehabitofgoingforawalkalongtherivereverymorningexceptitrains.[1分]

　　（A）.inthehabitof（B）.going（C）.along（D）.except

　　*50.Identifytheerrorsinthefollowingsentences:Wehadbettertoreviewthischaptercarefullybecausewewillhavesomequestionsonitinourtesttomorrow.[1分]

　　（A）.toreview（B）.will（C）.onit（D）.tomorrow

　　*53.Identifytheerrorsinthefollowingsentences:Shedidnothingbuttocomplainthewholetimeshewashere.[1分]

　　（A）.nothing（B）.but（C）.tocomplain（D）.washere

　　*54.Identifytheerrorsinthefollowingsentences:Heavoidedtogiveusadirectanswer.[1分]

　　（A）.avoided（B）.togive（C）.us（D）.direct

　　*58.Identifytheerrorsinthefollowingsentences:Shetoldmewhatshewantedmostthenwassomefoodtoeatandaroomtolive.[1分]

　　（A）.what（B）.was（C）.toeat（D）.tolive