Exercises on tenses

Tommy .............. (arrive) at six while his mother ................ (have) supper. She ................ (stop) eating, ................ (look up) and ................. (smile). Tommy ................... (feel) his anger growing inside. She ................... (can-neg.) be smiling as if nothing ................... (happen). It ............... (be) too much, too much hatred building up. Tommy ................ (go) into the kitchen and ............... (see) the chopper on the table. His hand .................. (move) fast. His mother ................... (stop) eating again but this time she ........................ (smile-neg.).