They ________have arrived at lunchtime but their flight was delayed.
| A．will | B．can |
| C．must | D．should |
Soldiers who fought all the way to the faraway places couldn't come back, and they had to__________ a life on the foreign lands.
| A．make |
| B．come |
| C．bring |
| D．Lay |
Why not try our luck downtown, Bob? That's __________ the best jobs are.
| A．where |
| B．what |
| C．when |
| D．why |
See the flags on top of the building? That was __________ we did this morning.
| A．when |
| B．which |
| C．where |
| D．what |
Please remind me __________ he said he was going. I may be in time to see him off.
| A．where |
| B．when |
| C．how |
| D．what |
—Oh, dear. What happened?
—I __________ on the shiny floor and fell.
| A．skipped |
| B．jumped |
| C．attacked |
| D．slipped |