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
Ted ______ for two months in London last year to receive his yearly training.
#103424
A
stayed
B
has stayed
C
had stayed
D
would stay
The inner connection for the entire area _____when there was a sudden power cut yesterday.
#101455
A
lost
B
was lost
C
had lost
D
had been lost
The discussion ________ alive when an interesting topic was brought in.
#104745
A
was coming
B
had come
C
has come
D
came
Last night’s TV news said that by then exact evidence for the missing plane MH370 .
#99339
A
had not been found
B
had not found
C
has not been found
D
has not found
The police ______ for the lost child everywhere.
#103822
A
is looking
B
has looked
C
are looking
D
are looked