---when _______the telephone________，do you know?---Yes．In 1876．
#39777
A
was，invented
B
are；invented
C
did；invent
D
had，invented
推荐题目
---- I’m sorry .I _____ your printer for such a long time.---- Never mind.
#38617
A
have borrowed
B
have lent
C
have kept
D
have bought
Don’t make any noise. The pandas over there.
#39700
A
are sleeping
B
have slept
C
will sleep
D
were sleeping
—May I speak to the headmaster?—He ____ a meeting now. Can I take a message?
#38899
A
is having
B
had
C
has
D
will have
－What do you think of my answer to the questions?－Sorry. What’s that? I______ about something else.
#41834
A
thought
B
had thought
C
am thinking
D
was thinking