He tried to avoid________my questions in class.
A．to answer B．answering
C．to have answered D．having answered
I would appreciate________back this afternoon so that we can reach an immediate decision.
A．you to call B．you call
C．your calling D．you're calling
________our manager objects to Tom's joining the club，we shall accept him as a member.
A．Until B．Unless C．If D．After
We________on this project for four hours.Let's have a rest.
A．are working B．have been working
C．worked D．had worked
Tom________tell the truth to his boss because he didn't want to make trouble.
A．daren't to B．dare to C．dared not D．dare
All these new students will be divided ________ 12 classes. Then these classes will be divided ________ the teachers.
A．to; in B．among; into
C．into; by D．into; among
