__________ young people are making efforts to take more exercise and eat healthily, they are still putting on weight.
| A．Because | B．Now that |
| C．When | D．While |
Mary kept weighing herself to see how much ______ she was getting.
| A．heavier | B．heavy | C．the heavier | D．the heaviest |
It is believed that if a book is ______, it will surely ______ the reader.
| A．interested; interest | B．interesting; be interested |
| C．interested; be interesting | D．interesting; interest |
Without the 
air to hold some of the sun’s heat, the earth at night ____ for us to live.
| A．would be freezing cold | B．will be freezing coldly |
| C．would be frozen cold | D．can freeze coldly |
It is hard for me to imagine what I would be doing today if I ____ in love, at the age of seven, with the Melinda Cox Library in my hometown.
| A．wouldn’t have fallen | B．had not fallen |
| C．should fall | D．were to fall |
“Do you know his address？” “No, I also wish I _____ where he _____.”
| A．knew, live | B．knew, lives | C．know, lives | D．know, lived |