_______ in the 1800s and first mass-produced in Germany, the harmonica(口琴) was designed to play simple folk tunes.
#96728
A
Being invented
B
Inventing
C
Invented
D
Having invented
推荐题目
It had been raining three days before we arrived, so we might as well _____ at home.
#97461
A
stay
B
to stay
C
have stayed
D
to have stayed
. Television has many advantages. It keeps us _____ about the _____ news and also provides entertainment in the house.
#98716
A
informed; latest
B
to know; later
C
learning; latter
D
to think; latest
I am going to do all I can _____ the bad impression you have of me.
#93361
A
to remove
B
remove
C
to leave
D
leave
The teacher asked more _____ to prevent the students’ eyes from being injured.
#98843
A
to do
B
done
C
to be done
D
being done
It’s no use ______ without taking any action.
#92285
A
to complain
B
complaining
C
being complained
D
to be complained