______to the sun for too long, I think, can hurt your skin.
| A．Being exposed | B．To expose | C．Exposing | D．Exposed |
Don’t waste words on him. He is so ______ that you can’t expect him to change his mind.
| A．stubborn | B．merciful | C．modest | D．sincere |
Take action today ______ you won’t miss your windows of opportunity.
| A．as if | B．now that | C．so that | D．even if |
Minister Bill De Blasio ______ in office fewer than 48 hours when he came face to face with his biggest challenge in his life.
| A．has been | B．had been | C．would be | D．is |
Private taxi booking apps have ______ like mushrooms in the past few months because of their convenience and high efficiency.
| A．broken up； | B．lined up； | C．come up； | D．sprung up |
The Beatles, the supreme rock and roll band of the 1960s, were in many ways pioneers for ______ was to come, like holding concerts in sports stadiums.
| A．which | B．what | C．whoever | D．that |