谁能伴我做一下这几道英语单项选择,要说出选这个不选另一个的理由~

谁能伴我做一下这几道英语单项选择,要说出选这个不选另一个的理由~
1.I____you my bike,but I didn't expect you would come back so soon.
A.must have leant B.might have leant
2.I still can't believe my eyes when I remember the scene____the best player should miss the pass.
A.that B.where
3.You can depend on it that she will come to the wedding ____,she's accepted your invitation.
A.After all B.That's to say
4.Your performance in the exam is not so satisfactory._____,you failed.
A.In a word B.In other wodrs
5.I smell something____in the kitchen.Can I call you back later?
A.burning B.burnt