. Ladies and gentlemen, please remain ________ until the plane has come to a complete stop.
—Shall we go to see the snow sculptures (雕塑)?—______.
Many English learners find that ______ pronunciation helps them improve a lot.
More and more women are working in this factory, ______ more than 40% of the workers.
To tell you the truth, I have a hard time remembering all the ______ rules of English grammar.
—You haven’t returned my chemistry textbook yet. —I know, but I ________ it for five days.
—You haven’t returned my chemistry textbook yet.
—I know, but I ________ it for five days.