根据以下句子, 选出最符合句意的一个单词.The Democrats have ______tosupport the opposition's motion.

A. ensured
B. assured
C. pledged
D. promise

This passage mainly tells us about:

A. The past does not have to define the future, and adversaries can indeed become friends.
B. The denuclearization of the Korean Peninsula and Iran.
C. President Trump committed to provide security guarantees to the DPRK.
D. President Trump withdrew from the Joint Comprehensive Plan of Action.

According to the text, which of the following statements is wrong?

A. President Trump and Chairman Kim Jong Un signed a joint statement.
B. President Trump spoke of Iran during the summit.
C. America and North Korean have been estranged for decades.
D. The nuclear weaponsambitions of Iran have long raised concern.

According to the text, which of the following aims is not included in the joint statement signed by Donald Trump and Kim Jong Un?

America will provide security guarantees to theDPRK.
B. North Korea will complete the denuclearization of the一Korean Peninsula.
C. The two countries will cooperate for the development of new U.S.DPRK relations
D. America will provide financial support for the DPRK

Dictation: At the historic summit between President Donald Trump and North Korea’s Chairman Kim Jong Un, a bold step was taken toward establishing a new relationship between two countries that have been1______for decades.In a joint statement signed byboth men, “President Trump committed to provide security 2______to the DPRK, and Chairman Kim Jong Un reaffirmed his firm and unwavering commitment to complete 3_______of the Korean Peninsula.”The leaders 4_______“to cooperate for the development of new U.S.-DPRK relations and for the promotion of peace, prosperity, and security of the Korean Peninsula and of the world.”In a press conference followingthe 5_______, President Trump spoke not only of North Korea, but also of another regime whose nuclear weaponsambitions have long raisedconcern: Iran.In May President Trump withdrew from the Joint Comprehensive Plan of Action, the nuclear deal that lifted nuclear-related 6______on Iran in return for Iran’s limiting its nuclear activities. In explaining his decision to withdraw, President Trump said the deal was defective, and, that under its structure, an Iranian nuclear bomb could not be prevented.At the press conference in Singapore, President Trump expressed the hope that Iran’s leaders “come back and 7_______a real deal, because,” he said, “I’d love to be able to do that.”In speaking of North Korea and the possibility of a new relationship with the United States, President Trump made a 8______that Iran’s leaders too should 9______.“The past does not have to define the future...As history has proven over and over again, adversaries can indeed become friends.” He emphasized that the United States and North Korea are “at the beginning of an 10______process. Our eyes are wide open,” he said, “but peace is always worth the effort.”