You should put on the notices ______ all the people may see them.
| A．where | B．in which |
| C．at | D．for them |
The week-long rainfall has ___ landslides and flooding in the mountain areas.
| A．set about | B．brought about | C．come about | D．put about |
Many scholars and experts from all over the world will be invited to attend this yearly ___ on drug control.
| A．reference | B．intention | C．conference | D．interaction |
. My grandmother likes to surprise people. She never calls ___ to inform us of her visits.
| A．beforehand | B．anyhow | C．originally | D．consequently |
Julie wants to buy a ___ computer so that she can carry it around when she travels.
| A．memorable | B．portable | C．predictable | D．readable |
In order to write a report on stars, we decided to ___ the stars in the sky every night.
| A．design | B．seize | C．quote | D．observe |