Our physics teacher and English teacher always give their lessons in a lively and clear way,____ greatly benefits us students.
In order to improve English,_______________.
—Why did you go to the wrong office? —Well, I forgot which room I was __________ to go to.
He was observed __________ into the house and help himself to what he liked before the owner came back.
Hospital staff burst into cheers after doctors completed a 20-hour operation to have_______ one- year-old twins at the head.
Hearing the dog barking fiercely, away __________.