英语：A:That pen （must） his. B:No,it（ can't ）be his. 这句话什么意思?括号里为什么填那两个词?

英语：A:That pen （must） his. B:No,it（ can't ）be his. 这句话什么意思?括号里为什么填那两个词? that is a pen (变为复数） that is a pen 改错:（Is ）（that ）a（ your） pen? this is a red pen.and that is a green pen.（改为同义句） this is a red pen.and that is a___ ___. This a pen.that is a pen,什么 That is a pen in English.(对画线部分提问,线划在a pen那里） I can spell pen.(作否定回答） that is a pen.改成一般疑问句 That is a pen.(变为复数) Is that a pen?的同意句 That is her a red pen.改错 Give me that pen._____ on the desk.A:The red pen B:A red pen C:Red pen 英语单选（准确）()1.My pen was lost.I will_____by a new one.A.must B.have to C.can()2.She often____books in the evening.A.reading B.to rea what is that in English?是It is a pen还是This si a pen还是That is a pen that sounds like a must 英语 i give a pen （to you） i give you （a pen）to you 、a pen 是什么成分啊? He wants a pen （）.A.this B.that C.like this D.like one Is __ your pen A.that B.this C.her D.his.That is his pen.