—Is Bob still performing?
—I’m afraid not.He is said___the stage already,as he has become an official
| A．to have left |
| B．to leave |
| C．to have been left |
| D．to be left |
Into the dark apartment _______, who was quite surprised when everyone shouted “Happy Birthday”.
| A．did David walk | B．David walked | C．David did walk | D．walked David |
Sorry I’m so late, but you cannot imagine _______ great trouble I took to find your house.
| A．what | B．how | C．which | D．why |
I’m going to buy my daughter another interesting novel, _______ she would like to read．
| A．that | B．what | C．one | D．it |
_______ playing dumb with teachers．They know very well their students.
| A．It’s no use | B．There’s no doubt | C．It’s no wonder | D．There’s no need |
— I heard the phone ringing in the office next door.
— You _______ it. They haven’t got a phone yet.
| A．couldn’t hear | B．couldn’t have heard | C．didn’t hear | D．wouldn’t have heard |