. The ________ is about $ 20 per person.
| A．take | B．spend | C．cost | D．pay |
The reporter said that the UFO ________ from north to south when he saw it.
| A．was traveling | B．traveling | C．travel | D．traveled |
Hurry up, everyone ________ for you.
| A．waited | B．is waiting | C．waits | D．will wait |
Trees __________ on Tree Planting Day only.
| A．shouldn’t be planted | B．should not plant |
| C．shouldn’t be planting | D．not be planted |
Sorry, smoking ________ here.
| A．isn’t allowed | B．doesn’t allow | C．didn’t allow | D．wasn’t allowed |
Some rules _________ to stop people from polluting the environment.
| A．must make | B．must be made | C．must made | D．be made |