_______environmental issues, the government will enforce existing regulations.
| A．Regards | B．As | C．For | D．As regards |
English is one of the ______ languages at international meetings.
| A．work | B．working | C．speaking | D．spoken |
In the 19th century the government _____ land to settlers willing to take care of it.
| A．advocated | B．separated | C．divided | D．distributed |
It ______ quite correct that happiness comes from thinking about things in a positive way.
| A．has turned out | B．has been turned out | C．is turning out | D．is turned out |
— Did you know any Chinese, Joyce, before you arrived in Beijing?
— In fact, never _______ it.
| A．have I learned | B．I have learned | C．had I learned | D．I had learned |
— Ten dollars, please!
— How terrible! I ______ bringing my wallet with me.
| A．was forgetting | B．forgot | C．had forgotten | D．am forgetting |