Although I had read the book assigned by the professor several times , it didn’t make any _____ to me.
The doctor couldn’t answer the question _____ the patient could survive that night.
---I got up at five this morning, I thought it was Friday. ---You _____ so early. It is Sunday today; you don’t have to go to work.
He says he really can’t _____ to wait another day.
---I can’t recite the poem. ---Well, you are supposed _____ it many times yesterday evening.
---May I surf the Internet tonight? --- No, you ______. You must do the exercises.