_______ in reading, the boy didn’t notice his father come in.

  A. To absorb                  B. Absorbing       

  C. Absorbed                   D. Being absorbed

 ______ the obvious differences in size and population, the states of America have many things in common.

  A. In spite of                                               B. In face of

  C. On account of                                            D. In return for

 --- It snows again! How long do you think it will be ________spring comes in Harbin?

--- It’s hard to say.

  A. when                   B. since                C. that                         D. before

 On April 20th an earthquake of 7 Richter scale hit Sichuan Province, which ______ 5 years before by a more serious one.

  A. was struck                                              B. had struck             

  C. had been struck                                     D. struck

 The picture was taken a long time ago. I wonder if you can ________ my father.

  A. find out                B. pick out                   C. figure out         D. turn out

 To broaden our horizons, our school offers compulsory courses as well as _______ courses for Senior Two.

  A. alternative           B. optional                  C. fundamental    D. flexible

 With forests being destroyed, _______ good soil is being washed away every year.

  A. many a                                    B. a huge amount of

  C. quite a few                  D. a large number of

---All the students are studying quietly.

---They have been accustomed ________ any noise during free periods.

A. not to make　　　　　　　　　　　　　　　　　　　　　 B. not to making

C. to not make　　　　　　　　　　　　　　　　　　　　　 D. to not making

 ________ in last training, he would be able to take part in the coming sports meeting.

  A. If he wasn’t injured                          B. He hadn’t been injured

  C. Hadn’t he been injured                          D. Had he not been injured

 The live concert _________ nearly three hours, but few people left early.

  A. covered               B. played                    C. lasted                     D. remained