I am _____ first cloned monkey and I was born at _____ research center in the USA.
A. the; a B. an; the C. /; a D. the; the
—Has James arrived at the hotel?
—No, he ______ by fans for photographs at the airport.
| A．has surrounded | B．would surround |
| C．was surrounded | D．is being surrounded |
The nationwide smog serves as a constant reminder, indicating that it’s high time we ______ on ourselves.
| A．would reflect | B．have reflected |
| C．are reflecting | D．reflected |
When and where this took place _____ still unknown.
| A．is | B．has | C．were | D．are |
So touching ______ that I couldn’t hold my tears back when I heard it for the first time.
| A．the song had sounded | B．had the song sounded |
| C．the song sounded | D．did the song sound |
Life is always full of hardships. _______ a better life, we need positive energy.
| A．Live | B．To live | C．Living | D．Lived |