1 . Look! The girls on the playground now.

A．dance

B．dances

C．danced

D．are dancing

2 . You     things about. Look, what a mess in your room!

A．always throw	B．have always thrown
C．are always throwing	D．have always been throwing

3 . It is reported that the local police ________ the case of two missing children, but no much progress has been made up to now.

A．looked into	B．will look into
C．have looked into	D．are looking into

4 . — Have you handed in your papers?
—Yes, we have. I guess they ________ now.

A．have corrected

B．are corrected

C．are being corrected

D．are correcting