单项选择题A.To keep your eyes a bit drier.B.To protect your eyes from infection,C.To cry for your sadness only.D.To conceal your happiness.
单项选择题A.They are going to see film downtown.B.They are going to call on the Johnsons.C.They are packing and going on their holiday.D.They are going to buy an umbrella since it is raining very hard.