She couldn’t ______ her words _______ by the students.
_______,but it is also a great way to lower the number of greenhouse gases in the air.
Zheng He started to sail in 1045 to “Western Seas”. In the following 28 years, he made _______ successful travels.
When _______ to our school, the new study methods are popular with all the students.
—When does our school often have a picnic? —_______,it's at the end of October.
It is the film _______ director is Steven Spielberg _______ attracts quite a few viewers throughout the world.