—Sam, come downstairs, please. I need your help.—Sorry,mum. I        on the phone..
#41572
A
am talking
B
talked
C
was talking
D
have talked
推荐题目
--Do you know where Mr Brown is?---He _______ Beijing for two days. 
#37919
A
has been to
B
has gone to
C
has been in
D
went to
 We only heard about the meeting yesterday, so it ______ yet.
#42760
A
didn’t prepare
B
hasn’t prepared
C
wasn’t prepared
D
hasn’t been prepared
We ________ our hands while they were singing on the stage.
#41720
A
clap
B
have clapped
C
were clapping
D
are clapping
My uncle, Micheal Wilson, ___ meeting every day.
#38530
A
have
B
is having
C
had
D
has