The __________ to the rocket going into space went wrong, and as a result it exploded and fell into the sea.
| A．mark | B．sign | C．symbol | D．signal |
When she was walking in the street，a young man __________ her cellphone.
| A．seized | B．snatched |
| C．held | D．grasped |
This __________news made everyone __________．
| A．frightened；frightened |
| B．frightening；frightening |
| C．frightening；frightened |
| D．frightened；frightening |
Parents should educate their children to _______ well while attending a party.
| A．celebrate | B．observe |
| C．accept | D．behave |
Because his father was badly ill,he went home_______________ .
| A．on duty | B．on business |
| C．on leave | D．on purpose |
—What has the old woman been doing recently?
—She has been______________ herself in making clothes for her granddaughter.
| A．doing | B．making |
| C．complaining | D．engaging |