—I wonder why you didn’t take part in the speech contest yesterday afternoon. —I'm terribly sorry, I________ myself.
It is a common practice in China that the bride at the weeding ________ be dressed in red to ensure good luck.
–When did he come back last night? --It was at 8 o’clock ________ I was watching a documentary on TV.
Don’t worry! All the problems will be settled ________ we join hands.
She told me that it had been worrying her much ________ her hair was turning gray.
There is no doubt that ________ a goal, one needs not only knowledge but also good personalities.