A.Necessity；B.Possibility；C.Obligation；D.Request；E.Advice；F.Intention

（1）I'm positive that you can get through the struggles if you are strong and hang in there.

B

B

（2）As a director，you must know how to choose right actors for your play.

C

C

（3）The actor has to learn his lines by heart before he takes the stage.

A

A

（4）You needn't clean the classroom，because I am on duty today.

A

A

（5）He ought to finish the courses and then get his degree.

C

C

（6）I will tell you the secret if you promise to keep it just between you and me.

F

F

（7）Ask your dad.He might go to the concert with you.

B

B

（8）Could I take a look at the schedule of tonight's party？

D

D

（9）You may as well have a discussion with your teacher.

E

E

（10）In the new film，Spider Man may be known for his bravery and strength，but he still has to do his homework after he's finished saving the world.

BA

BA