—How long have you been in this office?
—Just a few minutes. My cousins__________here together with me.
| A．have walked | B．had walked |
| C．walked | D．have been walking |
There is a big dog _______to a fence outside the house.
| A．tying | B．tied |
| C．to tie | D．ties |
The fog was so heavy this morning that drivers could hardly ________ the things just ten meters away from them.
| A．turn out | B．look out |
| C．let out | D．make out |
This is the most serious and worst situation ___ I have ever experienced as a fan of the NBA.
A. which B. that
C. whenD. where
--- She should have been warned of the danger before she carried out her traveling plan.
--- ______, but she wouldn’t listen to me.
| A．So had she | B．So she had |
| C．So she was | D．So was she |
— Don’t you remember my name?
— I’m really sorry. Your name ________ from my mind.
| A．escapes | B．escaped |
| C．will escape | D．has escaped |