30．I’m not sure ___________ it’s a good idea．

  A．that    B．what    C．told    D．tell

29．If you are afraid of doing it，just ___________ me．

  A．telling    B．to tell    C．told    D．tell

28．We will ___________a lot of time if we go by car．

  A．save    B．store    C．press    D．prepare

27．Never ___________ your raincoat when the weather looks so bad！

  A．forget bringing    B．remember bringing    C．forget to bring    D．remember to bring

26．No one tell us ___________，so we need your help．

A．how we should do    B．what should we do

C．how to do it         D．what to do it

25．Can you teach me  ___________ the computer?

  A．where to check    B．to check    C．what to check    D．how to check

24．I don’t know ___________ he will be back home．

  A．who    B．what    C．when    D．where

23．When the lights ___________red，it ___________ dangerous to cross the road．

  A．is．are    B．are，is    C．is，is    D．are，are

22．What made you ___________ he is a bad person?

  A．think    B．thinking    C．to think    D．thought

21．He spent three years ___________ Chinese before he came to China．

  A．learned    B．to learn    C．learning    D．for learning