He is quite different from the others. He spoke slowly, ______ curious manner.

[　　]

He usually works with the door and window _______.

[　　]

She stood there _______ a stick _______ her.

[　　]

---Some persons can be dancers, but some not.

---______ man can be a dancer.

[　　]

When I got back home I saw a message pinned to the door, _______“Sorry to miss you：will call later.”

[　　]

The _______ boy was seen ____near the East Lake.

[　　]

He sent me an e-mail, _______ to get further information.

[　　]

______ such heavy pollution already, it may now be too late to clean up the river.

[　　]

Though ________ money, his parents managed to send him to university.

[　　]

_______, we must read the instructions first.

[　　]

A．When using this machine

B．When this machine using

C．When this machine used

D．When used this machine