Never in the past twenty years so greatly as today.
| A．did the city change | B．the city changed |
| C．has the city changed | D．the city has changed |
Global warming is a big _______ for all and it’s important to raise awareness about climate change.
| A．reward | B．concern | C．evolution | D．boom |
— You _______ for me this morning. I came over here with Michael in his car.
— Well, why didn’t you let me know earlier?
| A．should have waited | B．would have waited |
| C．couldn’t have waited | D．needn’t have waited |
— Does your father like going to movies?
— Not really. He seldom, _______, visits the cinema.
| A．in addition | B．when necessary | C．if ever | D．above all |
There are many choices to make in life but _______ is more important than what goes on in your heart.
| A．nothing | B．neither | C．none | D．no one |
When I am down, my parents will do what every parent will do, _______ is to hug me tighter and tell me I am the best.
| A．which | B．what | C．that | D．who |