The first satellite ____telephone signals was called Early Bird.
#93370
A
was used to send
B
used to be sent
C
was used to sending
D
used to send
推荐题目
Not only should you get used ______ under difficult conditions but you also you pay more attention ______ your work well. 
#98934
A
to work, to do
B
to working, to doing
C
to work, to doing
D
to working, to do
The mother is very glad; her baby is beginning ______.
#97543
A
understanding what she means
B
to understand that she meant
C
to understand what she means
D
noticing what she means ,
___________ in the leg made it impossible for me to walk as fast as usual.
#90872
A
Being injured
B
To be injured
C
Having injured
D
Injured