At the Nuclear Security Summit, all the leaders discussed the plan they would like to see _______ in the near future.
I was told that although these old buildings _______ the Qing Dynasty, they remained in good condition.
It was Alice and her friends who helped the homeless old woman,______?
He felt _______ to remind the public to protect the environment.
The research they had been devoted to ______ to be of great value to the cancer patients.
A week-long raining is coming, _________, the farmers say, will do harm to the growth of plants.