We’d better _________ when he is thinking, as he prefers to solve problems on his own.
If only I could make the trip with you ! But I stay home and take care of my sick mother.
This weekend we’re going to Beijing to attend a summer camp and we’ll visit the Bird Nest_______we get there.
—I hope you enjoyed yourself at Susan’s birthday party.—How do you know I went to her party? I remember I you .
You must know why she got angry this morning,_________.
—Thank you for helping me order the food.—_________.