21.I would like to do it_____I like it.

A．since B．because C．because of D．now that

22. _____everybody is here, Let's set off.

A．Since B．Because C．For D．After

23.It was_____ he was ill that he was absent yesterday.

A．because B．as C．since D．now that

24. _____it is raining, we had better take a taxi.

A．For B．As C．Because of D．When

25."Why can't you do it now?" "_____I'm too busy."

A．Since B．As C．Because D．For

26.He must have passed this way, _____here are his footprints.

A．since B．because of C．now that D．for

27. _____everybody is here, Let's begin our meeting.

28.His speech made_____deep impression on the audience that they could hardly forget it.

A．such a B．so a C．so D．such

29.They worked hard_____they finished their work ahead of time.

A．so B．so that C．such that D．so as to

30.He was_____weak_____ he couldn't stand up.

A．such, that B．so, that C．very, that D．so, as to

升华案 2

（20分钟）

31.The foreigner spoke_____ his interpreter could hardly catch his words.

A．such fast that B．so fast C．so fast that D．so fastly that

32.The book is_____ it gives a wrong idea of the facts.

A．so writing that B．such written that