In the past decades, sea ice ______ in the Arctic as a result of global warming.
A. had melted B. has been melting C. melted D. is melting
I know you don’t like her, but try not to make it so ______.
A. curious B. obvious C. various D. previous
Schools in the north tend to be better equipped, ______ those in the south are relatively poor.
A. as B. unless C. when D. while
— Excuse me, can you spare me a few minutes?
—Sorry, I haven’t ______ time to talk to you just now. I have to leave early to catch ______ 4:30 train.
A. /; / B. the; the C. a; the D. the; /
There is never enough time to do everything, ______ there is always enough time to do the most important thing.
A. and B. but C. or D. so
— Look how happy you are!
—Yeah, I feel honored ______ into their society.
A. to welcome B. welcoming C. to be welcomed D. welcomed
