At times, parents find _______ difficult to talk with their teenage children.
| A．them | B．this | C．that | D．it |
--- Would you like to go birdwatching with us?
--- .
| A．Yes, I would | B．No, I wouldn’t |
| C．Yes, I’d like to | D．No, I am not happy |
He will work in this school _______.
| A．in two years | B．after two years | C．since two years | D．during two years |
The number of the red-crowned cranes will become ____ if we don’t take any action.
| A．fewer and fewer | B．less and less | C．smaller and smaller | D．larger and larger |
---You were out when I went to your house this morning.
---Oh, I _______ for a friend from England at the airport.
| A．was waiting | B．waited | C．am waiting | D．have waited |
He is getting ______ to hear the ____ words.
| A．boring; boring | B．bored; boring | C．boring; bored | D．bored; bored |