The present financial crisis has put the world economy in a difficult .
| A．occasion | B．case | C．background | D．situation |
The child asked his mother ______ go out to play tennis.
| A．that he could | B．if he could |
| C．if could he | D．that could he |
______ the tiger gets angry, it will be extremely dangerous.
| A．Once | B．As |
| C．Since | D．Because |
From the distance, the buildings look ________ they touched the clouds.
| A．as if | B．what if |
C．even though | D．even then |
His family had different ______ towards his decision, which made him very unhappy.
| A．methods | B．attitudes |
C．ways | D．views |
The field research will take Joan and Paul about five months; it will be a long time _____ we meet them again.
| A．after | B．before |
| C．since | D．when |