Going on a trip into ______ space must be quite ______ exciting experience.

(单选题)The best book are treasuries of good words and golden though (单选题)—I didn’t go swimming yesterday. What about you?—______, bec (单选题)______, British scientist Steven Hawking opened an account o (单选题)The book was so interesting that he had read it for four hou (单选题)Please choose a person to ______ your group to take part in (单选题)Smile costs ______, but it gives so much, so we should learn (单选题)President XI Jinping welcome online criticism from netizens, (单选题)Tom is really smart. In fact, I don’t believe anybody in his (单选题)This author writes this passage to______. (单选题)For this woman, cultural divergences_______.