She is a (A) well-known author, and (B) she has been writing (C) twelve novels so far (D).
A.and (B)
B.so far (D)
C.a (A)
D.has been writing (C)

The prices (A) of (B) electronic devices have gone down dramatically (C) late (D).
A.of (B)
B.The prices (A)
C.late (D)
D.dramatically (C)

Since I … to the town, I … home.
A.will move / will not returned
B.moved / have not returned
C.have moved / was not returning
D.move / am not returning

… the firemen arrived to help, we had already put out the fire.
A.Until
B.By the time
C.After
D.No sooner

I have been interested in wildlife animals … I was seven.
A.since
B.while
C.when
D.as soon as

… I visit him, we talk about politics a lot.
A.As far as
B.Whenever
C.Until
D.Up to

I flew for the first time last year … I went to Brazil.
A.till
B.until
C.as
D.no sooner

I am going to speak with the boss when the meeting …
A.would end
B.is ending
C.will end
D.ends

… for my train the morning, I met an old school friend.
A.While I was waiting
B.Until I had been waiting
C.As I will be waiting
D.When I had been- waiting

Once Mariana … her exam, I … her out to eat.
A.was finishing / would take
B.will finish / have taken
C.finished / had taken
D.has finished / will take