Who can bear _____ so many times?

According to a report, cigarette smoking____ in all indoor public places in China already.

This is the best dinner that I________.

We are confident that the environment________by our further efforts to reduce pollution.                                                                (2013·辽宁，30)

 ----What do you think of the Chinese language today? ---- Quite popular. It __________ an important role in communicating with other countries. More and more foreign friends are learning Chinese.