—I wonder why he has been acting so strangely these days．
—Recent pressure at work may ____ his behavior．
| A．account for | B．call for | C．change for | D．stand for |
After a long discussion with my family, we've _______blue for the bathroom.
| A．worked on | B．put on | C．taken on | D．decided on |
He can______to get us some tickets; I always trust him.
| A．try | B．attempt | C．manage | D．succeed |
In English colleges, classes are often arranged in freer and opener______and many jobs are designed for students.
| A．grades | B．ranks | C．customs | D．patterns |
— What great trouble I have solving this problem now！
—_____ my advice, you ________less trouble.
| A．If you had taken, would have had | B．If you took, would have |
| C．If you had taken, would have | D．If you take, will have |
As is well known to us all, in China pigeons stand for peace. However, in India the wheel in its national flag is also a _______of peace.
| A．symbol | B．sign | C．mark | D．example |