Please do not feed the fish; they _____ die if they eat too much.

Where are you going _____your next vacation —We decided____Europe.

You may borrow this book ­­­ ________ you promise to give it back

past few years, My Heart Will Go Onwas a popular song among young people, _____were often heard singing it atparties．

One of the advantages with the new tool is that it is users ____ Users can handle it with less effort and more convenience[ ]