1._____ gas prices are rising, people are looking for less expensive ways to get around.           

A. Now that                            B. Even if                            C. Although                            D. Unless

2.At the age of 14, Father had to leave school and start working. There would be no one to support the family _______ he not worked.

A. did                                      B. has                                      C. had                                      D. was

3.You ________ write the poem down. Our teacher will give us a copy soon.

A. mustn't                              B. can't                              C. shouldn't                              D. needn't

4.I'm glad to see your health ______ after the operation.

A. picking up                       B. setting up                       C. taking up                       D. getting up