---In recent years, problem of global warming had been very serious.
---That is right. People are facing number of natural disasters now.
| A．\; a | B．\ ;the | C．the; a | D．a ;a |
All the girls swam in the lake except two, who _____ halfway.
| A．gave off | B．gave up | C．gave away | D．gave out |
To our surprise the stranger _____ to be an old friend of my mother’s.
| A．turned out | B．turned up | C．set out | D．set up |
_____ in the garden for an hour, the girl suddenly realized she had forgot locking her car door.
| A．Reading | B．To read | C．Having read | D．To have read |
---We should forgive him for making such mistakes.
---You are right,_______that he is only a new hand.
| A．being considered | B．considering | C．to be considered | D．considered |
The boss suggested to Jessica strongly that she should have a good time, but ______didn’t help.
| A．which | B．she | C．she | D．it |