US First Lady Michelle Obama encouraged（鼓励）students to study abroad in her ____when visiting Peking University (北京大学) on March 22, 2014.

Lucy likes English very much . She does her best_____it well.

lphone looked quite similar toAlice’s , but it cost hers

How long are you staying–I don’t know. _____

Large quantities of water, as well as some other timely help including a medical team ___ since the serious drought hit Yunnan Province. [ ]