.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.---Don’t worry.You______ have it by Friday.A.could B.shall C.must

.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.---Don’t worry.You______ have it by Friday.A.could B.shall C.must
.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.
---I haven’t got the reference book yet,but I’ll have a test on the subject next month.
---Don’t worry.You______ have it by Friday.
A.could B.shall C.must D.may
为什么选B

.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.---I haven’t got the reference book yet,but I’ll have a test on the subject next month.---Don’t worry.You______ have it by Friday.A.could B.shall C.must
you he she it they与shall连用表示某时必定要发生或承诺是某事发生

shall应该.表将来