The first satellite ____telephone signals was called Early Bird.
| A．was used to send | B．used to be sent |
| C．was used to sending | D．used to send |
相关试题
27. To learn Engli8sh well. We should find opportunities to hear English _____ as much as we can.
| A．speak | B．Speaking | C．spoken | D．to speak |
26. I am not surprised that he became a writer. Even as a child he had
a ______ imagination.
| A．clear | B．Cautious | C．funny | D．Vivid |
25. ------- What’s that noise?
--------- Oh, I forgot to tell you. The new machine ____________.
| A．was tested | B．will be tested |
| C．is being tested | D．has been tested |
24. In 1939, Hitler ________ war against Poland, which started the Second World War.
| A．announced | B．Broadcast | C．declared | D．Advertised |
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