三、根据汉语提示完成句子。 1. You can keep the book for two weeks, but you must ______ it ______ ______ (按时归还). 2 —______ ______ (劳驾), could I borrow your bike? —Of course. 3. —Do you have any Project English workbooks? —Sorry, we don’t have any. —______ ______ ______ ______ ______(还是要谢谢你). 4. —Thank you for your Project English newspapers. —______ ______ (不客气). 5. ______ ______ (多长时间)can I keep these two books?