-What are on show in the museum?-Some pictures ____ by middle-school students.A. taking B. having been taken . taken D. being taken
Before going abroad he devoted all he could ____ his oral English. A. to improve B improving C. to improving D. improve
I just wonder _____ that makes him so excited.
A modern city has been set up in ____ was a wasteland ten years ago.
The man had expected to see his relatives when in hospital, but _____ came to see him while many of his friends offered him their help.
There was ____ time _____ I hated to go to school.