—I wonder if you could go with me to the shopping mall.—Don’t disturb me. I ______ my experiment report all the morning and haven’t finished yet.
#101610
A
wrote
B
was writing
C
have written
D
have been writing
推荐题目
Selecting a mobile phone for personal use is no easy task because technology ____ so rapidly.
#105002
A
is changing
B
has changed
C
will have changed
D
will change
 A new company _____ here at present. They hope to finish it next month. 
#99844
A
will be built
B
is built
C
is being built
D
has been built
I will stay at home and read some books if it ________ tomorrow. 
#101843
A
rain
B
will rain
C
rains
D
is going to rain