Selecting a mobile phone for personal use is not an easy task because technology ________ so rapidly.
#99746
A
is changing
B
has changed
C
will have changed
D
will change
推荐题目
I      to go for a walk,but someone called and I couldn’t get away.
#102480
A
was planning
B
planned
C
had planned
D
would plan
—What’s that terrible noise? —The neighbors ________ for a party. 
#104750
A
have prepared
B
are preparing
C
prepare
D
will prepare