---Spacecraft “Discovery” has failed in the course of launch.
----_______? They have been preparing for the test.
| A．How come | B．When | C．How | D．Why not |
--- I’ll come to see your performance at 9:00 tomorrow evening.
--- I’m sorry, but by then my performance ____ and I ____ reporters in the meeting room.
| A．will have ended; will be meeting | B．will end; will meet |
| C．will be ended; am going to meet | D．is to end; will meet |
Ten years ago the population of our village wasthat of theirs.
| A．as twice large as | B．twice as large as |
| C．twice as much as | D．as twice much as |
---We're going for a picnic next Sunday, and I'd like you to join us.
---____________！I have to see my grandmother. She has been ill for two weeks.
| A．What a pity | B．Good luck | C．That’s all right | D．Go ahead |
---- May I smoke here?
--- If you, choose a seat in the smoking section.
| A．should | B．could | C．must | D．may |
There are lots of problems in your hometown, but we're happy to see many of them________.
| A．are solving | B．are solved | C．have solved | D．are being solved |