—Hi, Tom, why are you looking so tired?
—I'm tried. Because I ______ the living room all day.
| A．painted | B．have been painting |
| C．have painted | D．had painted |
Mary didn't come to our party yesterday because she was busy preparing for the exam. We all felt sorry _____ her.
| A．of | B．for | C．except | D．besides |
He hid himself behind the door _____ he still could see what would happen to his classmates.
| A．there | B．which | C．from which | D．from where |
Do you have any idea of the reason _____ he referred to？
| A．that | B．where | C．why | D．when |
They stayed up until midnight _____ the old year out and the new year in.
| A．and saw | B．to see | C．seeing | D．for seeing |
If the car won’t start, _____ it.
| A．try push | B．try pushing | C．to try pushing | D．to try to push |