Look! There’s no light on—Sara _____be at home.
| A．can’t | B．mustn’t | C．needn’t | D．shouldn’t |
He went down into the cold water and after ________seemed a long time, he came out．
| A．that | B．what | C．which | D．it |
Who is ______ you want to send to the front?
| A．one that | B．that it |
| C．that the one | D．it that |
With two children ___middle school in the nearby town now, the parents are working hard．
| A．to attend | B．attend | C．attending | D．attended |
--- How many students are there in the classroom?
--- ______．All of them are practicing _____ the new song in the music hall．
| A．Nobody; singing | B．None; singing |
| C．Twenty; to sing | D．No one; to sing |
--- Will you go to Mary’s party?
--- Let me see．If you don’t, _____ I．
| A．so do | B．so will | C．nor do | D．neither will |