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 |
---Could it be in the restaurant_____ you had dinner with me yesterday ______ you left your keys?
| A．that; that | B．that; where | C．where; where | D．where; that |
It was five hours _____ the French climber reached the top of the world’s tallest building.
| A．since | B．that | C．before | D．when |
He must have been annoyed by something yesterday, _____?
| A．wasn’t he | B．hasn’t he | C．needn’t he | D．mustn’t he |
Children _____ to difficult situations are better at handling those _____ tasks.
| A．exposing; challenging; | B．exposed; challenged |
| C．exposed; challenging | D．exposing; challenged |
---Are you happy with this lab?
---Not a little. We can’t have _______.
| A．a worse one | B．a nicer one | C．such a worse one | D．such a nicer one |