When summer comes, the weather becomes __________ and the flowers become __________.

Every year, _______ visitors come to Taixing to enjoy the delicious food, such as Huangqiao cakes, Xuanbao dumplings and so on.

This robot is supposed to save a lot of labor, but it remains a problem if it ______.

People all around the nation were so excited upon the return of the three astronauts. [ ]

we met with difficulties, they came to help us.[ ]