D.hadfinished19.Theteacherunderstandsthat________Mathshadalwaysbeeneasyforhim,itisnoteasyforthestudents.A. sinceB.unlessC.althoughD.when20.Heranasfastaspossible________hecouldreachschoolontime.A.inordertoB.soastoC.whenD.sothatⅡ.用动词的适当形式填空:1. It________(be)nearlytwoyearssincewewenttothepartylast.2. Heishungry,becausehe________(nothave)hisbreakfastyet.3. WhenTom’smothercamehome,littleTom_______(cry)loudly.4. I________(notknow)ituntilyou________(tell)me.5. Theystartedassoonasthey______(receive)mytelephone.6. He________(leave)assoonashe________(drink)hiscoffee.7. Edisonplacedabigmirrorbehindthelampssothatthedoctor________(operate).8. He________(be)bettertodaythanhe________(be)yesterday.9. Ihopeyou________(be)happywhileyou________(be)here.10. Whatever________(happen),I________(be)onyourside.