【C4】A．all rightB．goodC．betterD．nice

All the aquatic mammals sleep a lot.A．RightB．WrongC．Not mentioned

All petitions are serious.A．RightB．WrongC．Not mentioned

【C4】A．developB．improveC．betterD．promote

－Shall we have something to eat before we go？－Nice to meet you.A. RightB. Wrong

－Can I help you？－Nice to see you.A. RightB. Wrong

【C4】A．rightB．normalC．wrongD．unusual