单项选择题
（）he had not hurt his leg,John would have won the race.
A.If B.Since C.Thongh D.When
单项选择题 Have you watered the flower? I don’t think this kind of flower need（）every day.
单项选择题 Grandpa（）to water the flowers now, It’s going to rain soon.
单项选择题 Sign up for alerts（）your mobile phone or email.
