The cosmopolitan flavor of San Francisco is enhanced by _______ shops and restaurants.

A. its many ethnic B. its ethnicity C. ethnicity D. an ethnic

 _______ here for hours and I feel tired

A. I had been standing B. I have been standing C. I have stood D. I’m standing

Caroline has worn her new yellow dress only once since she buys it.

    A. has worn B. yellow C. once D. buys

If you have some sufficient knowledge of English, you can make yourself understand almost everywhere.

    A. some B. of C. understand D. almost

It was suggested that Pedro studies the material more thoroughly before attempting to pass the exam.

    A. studies B. more C. attempting D. to pass

I should leave here. I don't want to ... my welcome.

A. give up

B. go off

C. run down

D. wear out

The government underwent... reforms.

A. far-reaching

B. far-gone

C. far-off

D. far- flung

After she had had a couple of glasses of champagne, she started to feel .....

A. narrow- minded

B. light-headed

C. light- footed

D. light- hearted

 In addition, many of barriers to career opportunity that existed only a few decades ago, such as discrimination based on sex or religion or ethnic origins, are...... disappearing.

A. rapidly

B. incessantly

C. categorically

D. vigilantly

 Climate change is changes of the Earth 's weather created ..... by heart-trapping gases in the Earth's atmosphere.

A. spectacularly

B. predominantly

C. stunningly

D. controversially