________Beijing of 2012 saw its first snowfall in the month of November.—Oh，it came as ________surprise to us.

I wish you _____ go to the art gallery with us. If there _____ enough tickets, I’d let you know.

was just chatting with the director when a stranger ________.

Mum, can I watch TV now–No. You ____tidy your room first.

________ plastic bags we use, ________ it will be to the environment.