1．What program are they watching now?
A．Animal World． B．English News． C．Sports News．
2．When did Thomas Edison invent the light bulb（灯泡）?
A．In 1798． B．In 1897． C．In 1879．
3．Why is the street so dirty?
A．Too many people throw rubbish． B．There are too many people．
C．The street is too crowded．
4．Where is the man going?