Xiao Ming practises his spoken English once there is a chance and that is_________ it takes to live his dream to be a good guide.
Forests ________ and burned at such a speed that they will disappear from the earth in the future.
—I’ve got a cough and my chest hurts. —________.Let me examine you.
What I need is ________ book that contains ________ ABC of oil painting.
Sam insisted that he________ the law and________.
—________ when has the country been open to international trade? —1978,I suppose.