Beijing isn’t what it used to be. The last decade _______ great changes in the city images.
| A．witnessed | B．was witnessed |
| C．has witnessed | D．had witnessed |
The fact that so many people still smoke in public places ________ that we may need a nationwide campaign to raise awareness of the risks of smoking.(2011·江苏)
| A．suggest | B．suggests | C．suggested | D．suggesting |
“Life is like walking in the snow，”Granny used to say，“because every step ________.”(2012·新课标全国)
| A．has shown | B．is showing |
| C．shows | D．showed |
He was unhappy when he sold his guitar.After all，he________it for a very long time.
| A．has had | B．had had |
| C．has | D．had |
—Oh no! We're too late.The train________.
— That's OK.We'll catch the next train to London.
| A．was leaving | B．had left |
| C．has left | D．has been leaving |
—Could I use your car tomorrow morning?
—Sure.I________a report at home.
| A．will be writing | B．will have written |
| C．have written | D．have been writing |