1.So she thought her son,Tom (1)______ help her (2)_______ some fish.
(1)A.could B.must C.should D.walking
(2)A.do B.cook C.buy D.sell
2."OK,Mum,"Tom said."It's not (3)_______to tell a live fish from a dead one."
(3)A.easy B.diffcult C.bad D.nice
3.On the way into town Tom saw a man (4)________fish next to a pool.
(4)A.selling B.buying C.cooking D.eating