a) walk c) walked b) are walking d) will walk 20. The family were sitting on the beach when it... a) start b) started c) will start d) is starting b) Do as required between brackets: (2 x 2= 4 m) 21. They are the teachers. They teach us Maths. 22. Mona used to play tennis when she was young. ********** .... to rain. (Join using: who) (Make negative)​