For many online shops, the price of their products can be decreased _______ 30% in the holiday seasons

2013 was a successful year for us China.— ___________, and ________.

I have two tickets for the theatre on Saturday evening. Would you like to ______ me?—I’d like to, but I’m afraid I have no time.

No one can answer the question _______ we can complete the task in time, do you know? — Yes, and this is because we don’t know the way _______ the scientist used last time．

The accompany (陪伴) of parents is very important.— Yes. _____ parents are busy, they should try to spend more time with their children.