【C3】A．matingB．excitingC．warningD．boring

The word“active”in para．2 line l means__________．A.fresh．B.excitingC.liv

【C2】A．reasonB．noticeC．warningD．signal

【C4】A．acquaintedB．gratifiedC．infectedD．bored

They are all _________ at the _______ news.A、exciting; excitedB、excited; excitingC、 exci

A red light is often used as a danger _____.A. signalB. signC. warningD. reminder

A postman’s job must be a boring one.