I called ________ his house this morning, but he wasn’t in. So I left a message telling him I would call______ him the next day.
| A．on; on | B．at; at | C．at; on | D．on; at |
Our luggage was checked all the way through to our final ____________.
| A．civilization | B．education | C．introduction | D．destination |
The lion is considered a(n) ________ of courage and power, and the other animals see him as kings of the forest.
| A．mark | B．example | C．sign | D．symbol |
— Shall we go to see the snow sculptures(雕塑)？
— _______.
| A．Sorry, I promise | B．It depends on the weather |
| C．Never mind | D．It doesn’t matter |
Do ________ you think is right _________ difficulties you may have.
| A．what; however | B．that; whatever |
| C．whatever; however | D．what; whatever |
— I phoned you at about three this afternoon, but no one answered.
— Oh, that was probably _______ I was doing exercise outdoors.
| A．when | B．why | C．what | D．that |