It is 30 years ______ China performed the Reform and Opening-up policy ______ has had a great effect not just on China, but also on the world.
. A thief was found ________ the house and steal the pictures last night.
. —What about putting some pictures into the report? — A picture is worth a thousand words.
Buses have routes. They _________ and _________people at different places on the routes.
The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult.
__________ the students, the teacher came into the room smiling.