(2012辽宁卷)The old couple often take a walk after supper in the park with their pet dog them.
_______ the end of last term, we had learned 3,000 English words.
Through the satellites, we can send and _______ messages.
All is needed is a Supply of oil.
--When _________ the training course begin? --Next Monday.
I think you’d better _____ your spare time better.