_______ he took off his dark glasses, I recognized him.

     A. Whenever                 B. As soon as                C. Then                         D. While

______ a famous personality has its advantages and its disadvantages.

     A. To be                        B. Be                             C. Been                         D. Being

He _______ on his computer for more than two hours when he decided to stop for a rest.

     A. has worked              B. has been working     C. was working             D. had been working

: Passengers are required to arrive to the gate fifteen minutes before departure time.

                                       A                            B                                                                   C           D

Being that he was a good swimmer, Tom managed to rescue the child.

                           A                                 B                                                            C              D

In order no money would be wasted, we had to account for every penny we  spent                                                      A                                                               B                                        C                                                D

Christmas has become too commercialized. Most people agree on that.

     A. Christmas has become too commercialized, so most people agree on that.

     B. Most people agree on Christmas, which has become too commercialized.

     C. Christmas has become too commercialized, just as most people agree.

          D. Most people agree that Christmas has become too commercialized

I didn’t know that you were at home. I didn’t drop in.

     A. I didn’t know you were at home although I didn’t drop in

     B. Not knowing that you were at home, I didn’t drop in

     C. If I knew you were at home, I would drop in

     D. Not knowing that you were at home, but I still dropped in

I’m sure it wasn’t Mr Phong you saw because he’s in Ha Noi.

     A. It couldn’t be Mr Phong you saw because he’s in Ha Noi.

     B. You mustn’t have seen Mr Phong because he’s in Ha Noi.

     C. It can’t have been Mr Phong because he’s in Ha Noi.

     D. Mr Phong is in Ha Noi, so you might have seen him.

Although he was very tired, he agreed to help me cook dinner.

     A. Tired as he was, he agreed to help me with my cook.

     B. He agreed to help me cook dinner, so he got tired.

     C. He was too tired to help me cook dinner.

     D. I wanted him to help me cook dinner as I was tired.