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A volunteer is a person willing to help others, one who offers to do something without__________.
| A．paying | B．paid | C．being paid | D．to pay |
After completing and signing it, please return the form to us in the envelope ________.
| A．providing | B．provided | C．having provided | D．provide |
_______the Teachers’ Day ,the students are cleaning the classroom.
| A．In spite of | B．In celebration of | C．In search of | D．In place of |
I need to get another dictionary, because cover is dirty and page is missing.
| A．a; a | B．a; the | C．the; a | D．the; the |
My book, The House of Hales, is missing. Who ________ have taken it?
| A．need | B．must | C．should | D．could |
The young couple, who returned my lost wallet, left _______ I could ask for their names.
| A．while | B．before | C．after | D．since |