动词考查(共5分)
What _____ they _____ at this time yesterday ?

A．did; do	B．are; doing
C．were; doing	D．do; do

Look! The baby _________  (lie) on the bed.

A．was lieing	B．is lieing
C．was lying	D．is lying

He didn’t finish ____________the room.

A．clean

B．cleaned

C．cleaning

D．cleans

As teenagers, we are old enough ___ with housework.

A．to help

B．helping

C．help

D．helped

My mom ____ happy if she ____ the mess in the house.

A．will be;sees	B．is;see
C．won’t;see	D．won’t be;sees