Family members worked hard __________ sure that they had enough food.
单项选择题—Would you like to go to the theater with me tonight__________ ,but I don′t think I can afford the time.
单项选择题A few days ago I visited a friend of __________ and that day I learned a valuable lesson.
单项选择题My bedroom was very small, with the window __________ the street.
单项选择题There′s plenty of time,so you __________ worry about it.
单项选择题Your article is well written,but I think you should __________ it again.