I enjoyed your lecture very much, ______ there were some parts I couldn’t quite understand.
| A．because | B．unless | C．after | D．though |
Why did you get up so early ___ this morning.
| A．on | B．/ | C．at | D．in |
The Eiffel Tower __________ for the 1889 Paris Expo. It is a symbol of the city now.
| A．built | B．was built | C．has built | D．was building |
Could you please tell me ___________?
| A．whose book is this | B．whose book was this |
| C．whose book this is | D．whose book this was |
---How far is your home to your school?
---It _________ me about twenty minutes by bus.
| A．costs | B．spends | C．pays | D．takes |
---Where is your father?
---He isn’t here. He __________ Yushu to help the people in trouble.
| A．has gone to | B．has been to | C．went | D．is going |