--David, are you 1istening to me?
---Sorry, Dad. I _______ to make sense of what the reporter said.
| A．was trying | B．have tried | C．am trying | D．tried |
________her mother after being separated for 20 years，she couldn't help，even though she tried not to，________.
| A．Seen；crying |
| B．To see；cry |
| C．Seeing；crying |
| D．Having seen；cry |
—What in the world put you in a really bad mood?
—________in the traffic for hours.
| A．Stuck |
| B．Being stuck |
| C．To be stuck |
| D．Sticking |
In the next five years，the government's work will be evaluated________on people's happiness level instead of GDP alone.
| A．based |
| B．to be based |
| C．basing |
| D．having based |
_______ on the top of the mountain is an ancient tower ______ back to two hundred years ago.
| A．Standing；dating |
| B．To stand；to date |
| C．Having stood；dating |
| D．Stand；dated |
—Linda，the phone in your office can't be connected all the time.Why?
—Oh，sorry，Miss Miles.The service________since last Wednesday.
| A．has been stopped |
| B．has stopped |
| C．was stopped |
| D．had stopped |