— The light in his room is still on. Do you know _________?
— To prepare for the coming exam, I think.
| A．if he works hard | B．why he stays up so late |
| C．why is he so busy | D．when he will stop working |
—Excuse me, whose Japanese book is this?
—It _______be Tom’s. In our class, only he is studying Japanese.
| A．may | B．can’t |
| C．would | D．might |
Vienna is ______old city ______the river Danube.
| A．the; in | B．an; on |
| C．a; at | D．an; of |
---Whose(谁的) is the ruler？
---It’s not_______. It’s ________.
| A．my; his | B．mine; your |
| C．my; hers | D．his; hers |
Here ______two books and a pen on the desk.
| A．be | B．am | C．is | D．are |
---_______my beautiful pencils?
---They are on the table.
| A．What’s | B．How are |
| C．Where are | D．They are |