It must have fallen out of my purse.为什么要用现在完成时,不是已经掉过了吗?

is it he must have fallen or he must have fell?whythank you A:Show me your passport,please.B:Oh,it’s not in my pocket.It must have ______.A.fallen off B.fallen out C.fallen down D.fallen over必须有解析 It must have fallen out of my purse.为什么要用现在完成时,不是已经掉过了吗? he ___ . i saw him playing football on the playground just now.a.must have fallen ill d.may have fallen illc.can't have fallen illd.should have fallen ill写出原因! 1.it was only a moment ago ___be went in a red car.A,until B.that c.before D.when 2.i didn't hear my father coming back last night .i ___asleep.A.must be B.must have fallen C.couldn't be D.could have fallen这个题我选的A 3.would you like to set 翻译 He must have fallen sick,for he is absent today mean?He must have fallen sick,for he is absent today翻译 You must have missed it Marie is very wet.She ____ in the river:can have fallen B:had to fall C:must have fallen D:needn't to fall Marie is very wet.She ____ in the river.this morning.A:can have fallen B:had to fall C:must have fallen D:needn't to fall it must have rained,＿it? have fallen love with you. have fallen in love造句 It Must Have Been Love (Cologne) 歌词 It Must Have Been Love 歌词 fallen Fallen fallen