—Who’s that over there, Is it Jane?—No, It ________ be Jane. She is ill in hospital today.

– Do you know whose book this is?—Let me have a look . It      Wei Fang’s . Look, here is her name.

--- Amazing ! You _________ wear slippers at work. --- Don’t you know it’s a fashion ?

--Morn, must I clean my room now? --No, you          . You can do it tomorrow.

(2014·济南市名校第四次诊断性测试)—Is the letter from your mother?—Yes.But she ________the letter herself，because she doesn’t even know one word.