As soon as I got on the bus I realized that I________ my papers in the house.
| A．left | B．was leaving | C．had left | D．have left |
--- The young man spent as much time as he _______ the experiments.
--- No wonder he succeeded _______.
| A．did; by the end | B．could doing; in the end |
| C．could doing; at the end | D．could to do; in the end |
--- Would you like to join us?
--- Sorry, I’m not _______ as any one of you.
| A．a so good player | B．a such good player | C．so good a player | D．such good a player |
--- _______ he come in or wait outside?
--- Let him in, please.
| A．Shall | B．Will | C．Does | D．Has |
--- Have you got ready for the meeting?
--- Not yet. We need ________.
| A．three other chairs | B．other three chairs | C．another three chairs | D．three another chairs |
He took off his coat, _____ all his pockets, but couldn’t find his key.
| A．searched | B．searching | C．to search | D．searches |