Our plane delayed taking off as we ran into a storm. We were ________ for several hours at the airport, waiting for the storm to clear up.
| A．figured out | B．built up | C．held up | D．taken off |
The rescue team ______to help but failed to get there in time.
| A．had wanted | B．have planned | C．were expecting | D．hoped |
---Will you two go to the show tomorrow?
---No. We're going to a lecture, or at least I'm planning ____.
| A．it | B．to | C．that | D．so |
I'd love ___ to your party last Sunday if not because of the unexpected guests.
| A．to go | B．going | C．having gone | D．to have gone |
____ the temperature falling so rapidly, we couldn't go on with the experience.
| A．Since | B．With | C．As | D．For |
--- Do you know Uncle Tom is crazy about gardening?
---Sure. He ____ his flowers in the garden now.
| A．may be watering | B．must be watering | C．could look after | D．ought to watch |