Wait till you are more ________. It’s better to be sure than sorry.
| A．alternative | B．satisfied | C．optimistic | D．certain |
—Have you found anything wrong with your computer?
—Yes,and I was about to give it up when an idea ______to me that it may be struck by some kind of virus.
| A．occurred | B．happened | C．took place | D．turned |
We______our breakfast when an old man came to the door.
| A．just have had | B．have just had | C．just had | D．had just had |
Although there is a difference in spelling,pronunciation between American English and British English,both of the countries have much to________
| A．share | B．communicate | C．spare | D．improve |
—I’m sincerely inviting you to join our chess club,Mr Turban.
—Thanks,but I’m not ________as any of you.
| A．as a good player | B．as good a player | C．as player a good | D．a good player |
The volcano eruptions are found ________around the Pacific ocean.
| A．almost | B．nearly | C．most | D．mostly |