Every possible means _______to prevent the air pollution, but the sky is still not clear.
| A．are being used | B．have been used | C．has been used | D．had been used |
--- Do you think I should get a good guide book ?
--- Yes , of course. ______ , you also need a good camera and comfortable shoes
| A． In other words | B． What’s more |
| C．By the way | D．All in all |
Under such circumstances, it is little ________ that they experience difficulties.
| A．shame | B．wonder | C．pity | D．relief |
She wonders ______ it is that has made him ______ he is now.
| A．what; that | B．what; what |
| C．there; so | D．that; what |
The professor’s speech_________ very well, and everyone present understood his opinions.
| A．worked out | B．found out. |
| C．figured out | D．put out |
I admire those people, _____ having little money, they feel happy and satisfied.
| A．With | B．Because of |
| C．In spite of | D．Instead of |