Listen!The children ________ in the playground．

A．are singing

B．singing

C．sing

D．sang

Now she ________ in bed, reading English．

A．lies

B．lay

C．is lying

D．sits

Look．They ________ on the grass, enjoying the sunshine．

A．sit

B．are sitting

C．sat

D．will sit

It is raining．He ________ an umbrella in his hand．

A．holds

B．is holding

C．held

D．hold

You can do some reading while you ________ for the train．

A．wait

B．have waited

C．are waiting

D．waited

Today Jim ________ his white shirt and brown trousers．

A．is putting on

B．wear

C．put on

D．is wearing

The children ________ football．

A．is playing

B．are playing

C．play the

D．play a

Look．Lucy is ________ a new bike today．

A．jumping

B．running

C．riding

D．lying

He ________ to New York tomorrow．

A．flies

B．is flying

C．flew

D．has flown

They ________ against air pollution these years．

A．are fighting

B．fought

C．fight

D．have fought