---Bob has gone to California. ---Oh, can you tell me when he ____?
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.
So excited were my classmates__________ the good result of the English speech competition!