Over the past decades, sea ice _______ in the Arctic as a result of global warming.
#104854
A
had decreased
B
decreased
C
has been decreasing
D
is decreasing
推荐题目
---- It is demanded that the letter ___by the end of this week , dad !----I’ll do it immediately .
#103403
A
should mail
B
was mailed
C
mailed
D
be mailed
— When will you come to see me, Dad ?— I will go to see you when you _____ the training course.
#104999
A
will have finished
B
will finish
C
are finishing
D
finish
- Let's hurry. Professor Beach is coming. - Oh, I was afraid that we ________.
#104520
A
already miss him
B
will miss him
C
have already missed him
D
had already missed him
I _____ Ping –pong quite well, but I haven’t had time to play since the new year.
#105001
A
played
B
will play
C
have played
D
play
--- You look very tired. _____ at all last night?--- No, not really. I’m tired out now.
#101425
A
Do you sleep
B
Were you sleeping
C
Did you sleep
D
Had you slept