He delayed writing the book until he had done a lot of research.
A.Only after he had done a lot of research did he begin to write the book .
B.He did a lot of research after he finished writing the book.
C.He delayed writing the book as he had already done any research.
D.It was only when he had written the book that he did a lot of research.

_________ (21)
A.knitted
B.sewn
C.woven
D.folded

_________ (23)
A.Whoever
B.However
C.Forever
D.Wherever

The children can stay here__________they don’t make too much noise.
A.whether
B.providing
C.unless
D.until

__________the ringing phone when it went dead.
A.Hardly I reached
B.I had no sooner reached
C.Scarcely had I reached
D.Just as I reached

He doesn't like his job because he doesn't get __________ his boss.
A.on well with
B.well to
C.with
D.on to

This is very__________ . Can't you practice your violin somewhere else?
A.convenient
B.conveniently
C.inconvenient
D.convenience

They stayed for hours, __________ my mother was very annoyed about.
A.that
B.which
C.this
D.whom

The book costs $15,50 but I have only $14,50.
A.I have more than enough money to pay for the book.
B.The book costs a little more than I have with me.
C.I have just enough money to pay for the book.
D.I need a few more dollars to pay for the book.

If I hadn’t had so much work to do I would have gone to the movies.
A.I never go to the movies if I have work to do.
B.I would go to the movies when I had done so much work.
C.A lot of work couldn’t prevent me from going to the movies.
D.Because I had to do so much work I couldn’t go to the movies.