ient ent st? ins 4. The sentences below are from the radio program above. Complete the gaps with the correct verb form could or had to. Then listen again and check. ter a) In those times, the ancient Egyptians make bricks that they used to build silos. think about how to keep their harvest safe from rats and mice. ed c) The ancient Egyptians plant different types of crops such as fruit, vegetables, and beans. d) But ancient Egyptians plant crops throughout the whole year. e) The ancient Egyptians invent their own calendar. b) They also at 1. W n