---It's reported__________the new underground line has been completed.
---Yes, but it hasn't been made clear ________ it's to be opened to traffic.
| A．when; when |
| B．that; that |
| C．when; that |
| D．that; when |
— 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 |
Everyone knows that ______ paper was invented by _______ Chinese.
| A．/; the | B．the; a | C．a; / | D．a; a |
__ it is to have a picnic in the hills on such a nice day!
| A．What a fun | B．How fun | C．What fun | D．How a fun |
I wish I____ my uncle yesterday.
| A．met | B．have met | C．would met | D．had met |
__________ ，the bad weather, the sports meeting has been put off until next week.
| A．For | B．As | C．Due to | D．Because |