She had just finished her homework __________ her mother asked her to practise playing the piano yesterday.
| A．when |
| B．while |
| C．after |
| D．since |
I wonder what it feels like to be one of______really rich. The Jenkinsons already have two Rolls Royces and now they are buying ____ third!
| A．the; a | B．the;the | C．/;a | D．/;the |
Many people are still in _____ habit of writing silly things in _____ public places.
| A．the;the | B．/; / | C．the; / | D．/; the |
What ______ public is concerned about is whether medical workers and scientists will be able to find for this new disease in a short time.
| A．不填;不填 | B．不填;the | C．the;不填 | D．the;a |
I smoke out of ____ habit, not for ____ pleasure; for I have been in the habit for twenty years.
| A．a; the | B．the; a | C．x; the | D．x; x |
The cakes are delicious. I’d like to have _______ third one as _______ second one I ate was too small.
| A．the, the | B．a, the | C．the, a | D．a, a |