According to the passage, how did Edison test his new invention?
A.He made improvements to the machine.
B.He used a carbon transmitter.
C.He read a children’s rhyme.
D.He produced the audience voice.

_________ (31)
A.large
B.dirty
C.small
D.clean

__________ (33)
A.lot
B.lots
C.many
D.much

_________ (35)
A.in
B.on
C.at
D.for

- “What are you doing now?”, the teacher asked Tom.
- The teacher asked Tom_________.
A.what he was doing now
B.what was he doing then
C.what he was doing then
D.what was I doing then.

Mary spent_________the countryside last week.
A.2 hours travel to
B.2 hour to travel
C.2 hours travel
D.2 hours traveling to

Do you mind_________?
A.if I borrow your car
B.borrowing your car
C.to borrow your car
D.if I borrowed your car

She asked me_________ at English.
A.if I was good
B.if was I good
C.if I good
D.if I am good

The librarian asked us_________so much noise.
A.not to make
B.no make
C.not making
D.don’t make



not making

I really enjoyed the disco. It was great, _________?
A.isn’t it
B.is it
C.wasn’t it
D.weren’t it