Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
#38768
A
explains ; to
B
has explained ; for
C
has explained ; to
D
explained ; with
推荐题目
_____ when the light went on last night?
#37783
A
What were you doing
B
What have you done
C
What did you do
D
How were you doing
--Where were you at 7:00 last night? -- I to my mom at home.
#41737
A
write
B
was writing
C
wrote
D
am writing
---- Did you see the hit New Year’s movie --- If You Are The One (非诚勿扰) last night ? ---- Yes, but when I got to the movie theater , the film ________ for ten minutes .
#40194
A
had begun
B
had been on
C
has been on
D
began
In recent years, the economy of our country _________ rapidly.
#39782
A
is increased
B
has increased
C
increased
D
has been increased
–Have you ever been to Disneyland?–Yes. I ________ there last summer.
#36235
A
will go
B
went
C
have gone
D
was going