The ______ on his face suggested that he was a little nervous .

 The dam will generate electricity _____ about 40 million tons of coal without causing so much air pollution.

----- Have you finished your report yet? ----- No. I’ll finish it in _________ ten minutes.

–English is becoming so important.–It’s true. Many university classes are taught in English _____ the native language is not English. 

It is ____ fashion differs from country to country ____ may reflect the cultural differences.