I have been studying computer for years and I still ___.
#99982
A
have
B
do
C
have been
D
am
推荐题目
Do you know his address?” “No, I also wish I _____ where he _____.”
#103699
A
knew, live
B
knew, lives
C
know, lives
D
know, lived
By the time you arrive in Liverpool, we ___________ in France for two weeks. 
#102888
A
shall stay
B
have stayed
C
will have stayed
D
have been staying
Over the past decades, forest area ______ in China as a result of massive deforestation.
#102586
A
had decreased
B
decreased
C
is decreasing
D
has been decreasing