-I will call on you at 9:00 tomorrow morning.
-Sorry, I __________ the flight to Sanya then.
| A．have enjoyed |
| B．will be enjoying |
| C．am enjoying |
| D．am to enjoy |
There are some students ______ to have known what they don’t really know, which is really harmful to them.
| A．pretending | B．to pretend | C．pretended | D．pretend |
The _____ boy never dares to see the ____ film again.
| A．frightened; frightening | B．frightening; frightened |
| C．frightened; frightened | D．frightening; frightening |
--- We expected you yesterday．
--- I'm sorry, Iyou to say that I couldn't be here until today．
| A．must have called | B．would be calling |
| C．could have been calling | D．should have called |
He is ____our teacher; he is also our best friend.
| A．less than | B．rather than | C．more than | D．better than |
--Why does the river smell terrible?
--Because large quantities of water__________.
| A．have polluted | B．is being polluted | C．has been polluted | D．have been polluted |