I into robots and used to make mobile phones as well as help with medical operations.
#102747
A
have put
B
have been put
C
had put
D
had been put
推荐题目
His father, who is said to be teaching in Australia, ____ in Nanjing University for more than 10 years.
#102312
A
has worked
B
had worked
C
worked
D
has been working
They required that the work as soon as possible.
#100269
A
be finished
B
will be finished
C
should finish
D
is finished
The school board is made up of parents who ________ to make decisions about school affairs.
#100584
A
had been elected
B
had elected
C
have been elected
D
have elected
The fog was so heavy this morning that drivers could hardly _______ the things just ten meters away from them.
#99330
A
figure out
B
look out
C
make out
D
try out
23．- Why weren’t you at the meeting? - I ________ for a long distance call from my sister in America.
#103315
A
was waited
B
was waiting
C
has waited
D
have been waiting