— Do you still remember when we went to Nanjing? — I can't remember now but ________sometime last summer?
I firmly believe _____ he said at the meeting was right.
___ difficult the task may be, we must fulfil it this month.
“_____ when does the pub stay open?” “About midnight.”
___you understand this rule, you will have no further difficulty.
“Shall we stop for lunch _____ shall we drive on?” “Let’s stop for lunch, but the driver can’t drink _____ drive.”