I have dropped ＿＿"s"in the word "necessary".Oh,＿＿letter"s"is doubled.A：a；a B：a;the C：an;the D：the;the

Not I have dropped,but you have. I have dropped ＿＿sin the word necessary.Oh,＿＿lettersis doubled.A：a；a B：a;the C：an;the D：the;the you have dropped _s'' in the worldnesscessary. I () have dropped it on the floor.() 怎么填 I think you dropped---------- “s” in writing “baseball”.填神马? I___ have dropped it on the floor根据首字母填空I___ have dropped it on the floorI...have dropped it on the floormy teeth were a....in thepiece on the floorIt's d....now!以i开头的词语、以a开头的词语和以d开头的词语 ( ).-- DO you still have a headache,Bill?-- No,it's _________.I'm all right now,mum.A.dropped B.run C.left D.gone -- DO you still have a headache,Bill?-- No,it's _________.I'm all right now,mum.A.dropped B.run C.left D.gone - No,it's ____.I'm all right now,Mum.A.dropped B.run C.left D.gone-Do you still have a headache,Bill? drop by 和drop at 有什么区别?I dropped by my friend's house yesterday.可不可以用dropped at I ( )my wallet when I was shopping in the store.答案为什么选择must have dropped而不是ought to have dropped? B ) 39.It was the third time that I _______ in at his office.A.have dropped B.had dropped C.droB ) 39.It was the third time that I _______ in at his office.A.have dropped B.had dropped C.dropped D.was dropping( A ) 41.The flowers want _______.Look,th My wallet is nowhere to be found.I ___________ in the store.A.drops B.must have dropped it C.dropped D.dropping dropped dropped you have dropped an s in the word necessary非要是an吗,为什么不可以是the 1.We are late.I expect the film ________ by the time we got to the cinema.A.will already have startedB.would already have startedC.shall have already startedD.has already been started2.I found an aspirin bottle _______ dropped on the floor of David's My wallet is nowhere to be found.I ( )when I was on the busA.must drop it B.should have dropoed it C.must have dropped it D.had dropped it