Dont______this book. It may be used later.A．throw offB．throw downC．throw upD．throw away

When you have finished with the book,dont forget to return it to Tim,______？A．do youB．will

When you have finished with that book, dont forget to put it back on the shelf, ______？A．d

Keep this reference book; it may come in ______ one day.[2008]A．handyB．usefulC．convenientD

When you have finished with that book, dont forget to put it back on my desk, ______？[2008

Susan______ a book about cooking last year, but I dont know whether she has finished it.A．

Scientists say it may be five or ten years ________ it is possible to test this med