a) Complete the sentences.
1. People have used the telescope since
2. People have always wondered if
3. A probe is a kind of
4. NASA has sent to
5. Men couldn't find an evidence on Mars. for many times.
![A Complete The Sentences 1 People Have Used The Telescope Since 2 People Have Always Wondered If 3 A Probe Is A Kind Of 4 NASA Has Sent To 5 Men Couldnt Find An class=](https://tr-static.eodev.com/files/d18/d5b121e15f5ec820ddd27bf4ab19c044.jpg)