单项选择题
A. What about making it a little earlier B. I have no idea C. Let’ s go together D. Thank you all the same E. Do you like basketball F. When and where shall we meet G. What are you going to do H. It doesn’ t matter
A. a solar powered engine B. engine-powered twin fans C. large flapping wings D. rotating blades
A. for the highest price offered B. only at fixed prices C. at a price less than their true value D. very cheaply