Things have changed a lot ____ I wrote to you last time.
| A．when | B．since | C．as | D．before |
It is a great pity that the band which Jack was a member of ____ after 26 years of
playing together on stage.
| A．broke up | B．put up | C．sent up | D．took up |
Workers who cannot speak good English may be at disadvantage ____ with foreign
customers.
| A．when interacting | B．when interacted |
| C．when to interact | D．when being interacted |
The poor boy seems _____ the news that his father died in the car accident for there is no sign of sorrow on his face.
| A．not to be known | B．not to have received |
| C．to have not received | D．not to know |
_____ more energy to my studies instead of to online games, I would be sitting in
a comfortable office now.
| A．Were I devoted | B．Had I devoted |
| C．Would I devote | D．Should I devote |
Faced with challenges, your ability is makes a difference.
| A．that | B．which | C．how | D．what |