Seeing the happy ________ of children playing in the park, I’m full of joy and confidence in the future of our country.
| A．sight | B．view | C．sign | D．scene |
By no means ___to your parents.
| A．is this the first time you are lying |
| B．this is the first time you have lied |
| C．this is the first time you tell a lie |
| D．is this the first time you have lied |
We_______on this project for four hours. Let’s have a rest.
| A．are working | B．have been working | C．worked | D．had worked |
Many people believe we are heading for environmental disaster _____ we basically change the way we live.
| A．but | B．although | C．unless | D．once |
She longed for a pleasant trip in the summer, while her parents desired that she_______ at home, preparing for the coming exam..
| A．stay | B．stays | C．must stay | D．would stay |
Jack has made great achievements in his work, and the harder he works, the more _________ he becomes.
| A．religious | B．energetic | C．curious | D．independent |