If I hadn’t stood under the ladder to catch you when you fell, you _____ now.
| A．didn’t smile | B．won’t smile | C．wouldn’t be smiling | D．couldn’t have smiled. |
It is the most instructive lecture that I ___ since I came to this school.
| A．attended |
| B．had attended |
| C．am attending |
| D．have attened |
He decided that he would drive all the way home instead of ___ at a hotel for the night.
| A．putting down |
| B．putting off |
| C．putting on |
| D．putting up |
Look over there——there’s a very long,winding path ___ up to the house.
| A．leading |
| B．leads |
| C．led |
| D．to lead |
He got up late and hurried to his office, ___ the breakfast untouched.
| A．left |
| B．to leave |
| C．leaving |
| D．having left |
When Peter speaks in public,he always has trouble ___ the right things to say.
| A．thinking of |
| B．to think of |
| C．thought of |
| D．think of |