It was not until this year _____ scientists managed to make a cat and a goldfish disappear from sight using an invisibility cloak(斗篷)
| A．that | B．when | C．while | D．As |
. ----How did you find your visit to the Summer Palace yesterday?
----_____. I got separated from my 80-year-old grandparents
| A．It couldn’t be better | B．I have no idea |
| C．Good luck to me | D．It couldn’t be worse |
He could have helped us, but he ____ from coming in time by a traffic jam.
| A．has been prevented | B．had been prevented |
| C．is prevented | D．was prevented |
____ the rain falling so hard, it becomes more and more difficult to carry on the rescue work.
| A．Since | B．With | C．As | D．For |
The class _____ 80 students is hard to manage.
| A．making up of | B．consisted of |
| C．consisting of | D．made up |
----Who do you think should answer for Li Tianyi’s behavior?
----Actually, I think it is their parents _____.
| A．who are blamed | B．that are to blame |
| C．which are to blame | D．what are blamed |