The picture ______ on the wall is painted by my nephew.
Beijing has struggled with smog for years,which has__________ the sun and affected the health and quality of life of millions.
Between the lectures is a 20 minutes’break,__________the students can get relaxed.
The speech from the new government is a __________ that major changes are on the way.
一How did you manage to succeed?一It is only after we've lost everything __________we're free to do anything.
Mum__________ me to school as she knew it was important for me to receive education,but we were so poor then.