It was probably _______ the wrong operation(操作) of the pilot that caused the plane to crash.

   A. because of       B. because           C. as a result       D. \

 —I’m your old friend Tom. We used to study in the same high school.  

   —Tom? I’m sorry I ______ you. Where have you been all these years?

   A. haven’t recognized            B. hadn’t known

   C. don’t know                  D. didn’t recognize

 Come on！Tell us ______ you remember about what happened then.  

   A. whatever        B. no matter what   C. whichever      D. all what

 The driver explained to the policeman that he hadn’t done that ______ purpose, hoping that the punishment wouldn’t be too serious.

   A. for             B. on             C. with           D. by

 It is reported that housing prices of China rose by 1.5% in January this year, ______ with the same month last year, ______ the public doubt deeply.  

   A. compared, it                 B. comparing, which  

 C. compared, which             D. comparing, that

 Only after he took off his sunglasses ______ him as one of my favourite movie stars.

   A. I recognized                 B. I didn’t recognise

   C. did I recognize               D. had I recognized

 Our eating habits have changed, ______ has our way of life.  

   A. like             B. as            C. but            D. nor

 We mustn’t waste anything; ______, we mustn’t waste our time.  

A. after all          B. in all         C. above all        D. at all

 A lesson from the terrible drought(干旱) that hit some parts of southwestern China this year is that more anti-drought projects ______ built in the past years.

   A. should be                    B. should not have been  

C. ought to have been         D. must be

 —Where did you get this book?  

   —Oh, I ______ it in the bookshop when I was looking for another one.

   A. came across       B. found out      C. looked for     D. came up