It has been evident that too many children in the city are left ________ when their development requires parents’ close attention.
When I was a child, I ________ watch TV whenever I wanted to.
I should not have laughed if I ________ you were serious.
The door ________ open, no matter how hard she pushed.
(2013·天津,9)No one ________ be more generous; he has a heart of gold.
(2013·辽宁卷) everyone here,I wish you a pleasant journey back to your journey.