We may find that learning a foreign language does not have to be________learning our mother tongue,but can in fact be twice ________.
None of the students watched the teacher______.
Miss Yang will teach us Chinese today ____ Mr Zhang.
Johnny, you ________ play with the knife, you ________ hurt yourself.
—I’ve studied growing plants as one of my interests. Could I make some suggestions? —__________.
—Now let’s move on to another topic. Do you follow me? —__________, Professor.