People often have this belief _______economic development is bad for the environment, but this does not have to be true.
| A．what | B．which | C．that | D．when |
The child sat in the dentist’s chair _______.
| A．tremble | B．trembling | C．trembled | D．to trembled |
Properly _______ with numbers, the books can be easily found.
| A．marked | B．mark | C．to mark | D．marking |
Were you _______ when you saw that wild animal?
| A．fright | B．frightening | C．frightened | D．frighten |
_______ the composition, John handed it to the teacher and went out of the room.
| A．Writing | B．Having written | C．Written | D．Being written |
."Can you read?" Mary said _______ to the notice.
| A．angrily pointing | B．and point angrily | C．angrily pointed | D．and angrily pointing |