Complete each of the following sentences with one suitable word. 1. He suffers f_ _m asthma. 2. Mark has two children to s_ _ _ _ _t from his first ma

Complete each of the following sentences with one suitable word.
1. He suffers f_ _m asthma.
2. Mark has two children to s_ _ _ _ _t from his first marriage.
3. It was once t_ _ _ _ _t that the sun travelled around the earth.
4. The soft ware e_ _ _ _ _s us to get pictures from other planets.