The bed piano allows a music lover to play ____ piano while he is lying in bed．（　　）

A．aB．anC．/D．the

Did you read your favorite books ____ April 23？ It was World Book Day．（　　）

A．forB．atC．onD．in

We couldn't buy anything because ____of the shops were open．（　　）

A．allB．bothC．nothingD．none

Could you please speak a little louder？ I ____ hear you very well．（　　）

A．can'tB．mustn'tC．shouldn'tD．needn't

Jane ____ to call me last night， but she didn't．（　　）

A．supposedB．supposes

C．was supposedD．is supposed