As the art festival is coming, they are preparing everything by ________.
| A． |
yourselves |
B． |
ourselves |
C． |
themselves |
Please remember to _________the electricity and water before you leave the laboratory．（ ）
A．take offB．shut offC．go offD．put off
Li Lei didn't play computer games last weekend．__________，he worked as a volunteer in an old people's home． （ ）
A．InsteadB．CertainlyC．ThoughD．Gradually
You'd better not hang out after school _______telling your parents． They may worry about you．（ ）
A．byB．withC．withoutD．after
What _________unusual school trip we had! I will never forget it．（ ）
A．aB．anC．theD．/
In America， Thanksgiving is a holiday _____________celebrates the love of family．（ ）
A．whoB．/C．that