Complete the following sentences by giving correct form of verbs and adding prepositions to make meaningful sentences about Sahara desert. The Sahara Desert is one of (dry and hot region) _____of the world, with a mean temperature sometimes over 30 °C and the averages high temperatures in summer are over 40 °C for months at a time, and can even soar (on/in/at/to)_____47 °C.