I don’t have to introduce him to you ________ you know the boy.

1. A.
   until
2. B.
   unless
3. C.
   since
4. D.
   but

I don’t have to live in the hotel ____ my friend provides a very good place for me.

I don’t have ________ to spend with her.

A. enough time?? ????????????? B. time enough?? ????????????? C. many time??? ????????????? D. time more

You don’t have to take notes ________ I tell you to do so.

A. if  B. when  C. because  D. unless

You don’t have to _______ every new word in the dictionary while reading.

A. look for    B. look up    C. look at   D. look after