【单选题】
When Lily came home at 5 p.m. yesterday, her mother()dinner in the kitchen.
A、cooked
B、was cooking
C、cooks
D、has cooked
A、cooked
B、was cooking
C、cooks
D、has cooked
A、Jack一Sara,Tom一Linda,Henrry一Lily B、Jack一Sara,Tom~Lily,Henrry一Linda C、Jack一Linda,Tom一Lily,Henrry一Sara D、Jack一Lily,Tom一Sara,Henrry一Linda