单项选择题
Many people want to read this book. So you ______ keep it for more than two weeks.
单项选择题 We all went to ______ the play yesterday afternoon.
单项选择题 Robert has gone to ______ city and he'll be hack in a week.
单项选择题 When I came across him ______ in a supermarket, he pretended not to see me.
