Over the past decades, sea ice_______ in the Arctic as a result of global warming.
| A．had decreased | B．decreased |
| C．has been decreasing | D．is decreasing |
——Shelooksveryhappy.Shehavepassedtheexam.
——Iguessso.It’snotdifficultafterall.
| A．should | B．could | C．must | D．might |
The fact that so many people still smoke in public places____ that we may need a nationwide campaign to raise awareness of the risks of smoking.
| A．suggest | B．suggests | C．suggested | D．suggesting |
MaybeifI_____ science,andnotliteraturethen,Iwouldbeabletogiveyoumore help.
| A．studied | B．wouldstudy | C．hadstudied | D．wasstudying |
I definitely appreciate ____ when I can walk away from my computer after a long day of typing and have pain-free arms!
| A．that | B．it | C．you | D．one |
--- Please call me at 7:00 tomorrow morning. I’m kind of forgetful.
--- Don’t worry about that. You’ll surely be ________.
| A．informed | B．reminded | C．warned | D．instructed |