---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
Ken _____ his jacket in the gym. He has to get it back.
#39092
A
left
B
leaves
C
is leaving
D
was leaving
–Tom, you didn’t come to my party last night?– I ________, but my mom hurt her back and I had to look after her.
#41573
A
had to
B
didn’t
C
wouldn’t
D
was going to