ইংরেজি ২য় পত্র প্রশ্ন

7.

Use appropriate sentence connectors in the blank spaces of the following text.
Scientists have always wondered (a) — there is life anywhere out in the space. They have joined together in a major project called the communication with Extra Terrestrial Intelligence (b) — seeks to establish contact with any other living beings in the universe. (c) —, they are beaming out radio signals into the space. It was thought (d) — there exists life on Mars. (e) — two viking spacecrafts (f) — landed on Mars in 1976 did not provide much evidence of life there. The pictures sent by them showed (g) — the Mars has a sky; (h) —, the sky is red instead of a blue one like ours. Its gravity is about half (i) — strong (j) — that of Earth. (k) —, the atmosphere is also much thinner than that of our planet. It has deserts, high mountains, canals, volcanoes, craters etc. as well as summer (l) — winter. (m) —, there are no trees, (n) — life forms.