where is my pen? I　＿＿＿　it．A. might lose B. must have lost 选B.但A为什么不可以?也是表推测啊

I can't____my pen.where is it?I can't find my pen.where is it? Where is my pen?It's_________(那边) where is my pen and bag是什么意思 where is my pen?I can't find it anywhere.用现在完成时改写成同义句 This is ——pen.Where is——pen?A.his；you B.yourThis is ——pen.Where is——pen?A.his；you B.your；my C.I；her D.he；you where is my pen和where are my pen有什么区别? Where is my pen and pencil?还是Where are my pen and pencil? where ()my pen and my pencil?1,are 2,is my(dear)!where is my pen?为什么用dear where --- my CD and my pen?用is还是are?where --- my CD and pen?用is还是are? where is my pen?回答 A.yes,it is B.yes,Ican C.I can't find it Is can't find my pen .Where is it?Do you know?Sorry,I________.Sorr,I后面填什么 .. where is my pen? I　＿＿＿　it．A. might lose B. must have lost 选B.但A为什么不可以?也是表推测啊 Where is my pen?It's ( ) 空格处填啥? where is my pen oh,sorry.i have taken ____ by miswhere is my penoh,sorry.i have taken ____ by mistake My pen is on the table.划线部分为on the table.就划线部分提问.请问答案是Where is my pen?还是Where is your pen? where is the pen I bought last week? 连词成句 (pai new pen my Canada from is) (does pen live her pai where)