We offered these students a summer course, aimed __________ improving their spoken English.
. He hurried to the station only___________ that the train had left.
“A Confident China”was first______________in the 2009 two sessions in Beijing.
Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom.
Tom joined a dancing group but didn’t seem to___________, so he left.
The little boy was found__________in his room the next day.