They studied what ______ since 2007 and found Australian electricity prices were among the highest in the developed world.
#102193
A
has happened
B
happened
C
had happened
D
has been happening
推荐题目
Taiyuan, a city in North China, was struck by a heavy snowfall last week, ______ serious traffic problems.
#103388
A
to face
B
faced
C
having faced
D
facing
Mr Smith ______ a book about China last year but I don’t know whether he has finished it.
#103700
A
has written
B
wrote
C
had written
D
was writing
They required that the work as soon as possible.
#100269
A
be finished
B
will be finished
C
should finish
D
is finished
--- Is it convenient to you if I call you up at 9 o’clock tomorrow morning? --- I’m afraid not. I _________ a speech then.
#102358
A
was giving
B
will be giving
C
am giving
D
will have given
The problem with people in Africa ____that the more is given and the more ______.
#103689
A
is; is needed
B
are; is needed
C
is; they need it
D
are; they need it