29. On March 12, the students were planting trees ____ the classroom.
| A．in the back of | B．at the back of | C．to the back of | D．on the back of |
— Do you mind my taking the books away?
— ________.
| A．Certainly, please do. | B．No, go ahead |
| C．Yes, not at all | D．No, please don’t |
The Government has promised to take ____ to help the unemployed.
| A．measures | B．means |
| C．methods | D．measurement |
Though it is difficult, I ______ him find a job, which made him very pleased.
| A．tried to help | B．managed to help |
| C．tried helping | D．succeeded to help |
Mrs. White found her husband ___by letters and papers and___ very worried.
| A．surrounding ; looked | B．surrounded ; looked |
| C．surrounding; looking | D．surrounded ; looking |
She is upset today, and I want to doI can to cheer her up.
| A．whichever | B．however |
| C．whatever | D．whenever |