--The apple tastes very nice. Could I have another apple, Sir?
--_________.
| A．Yes, you could | B．Mind your hand | C．I’m sorry | D．Be my guest |
______ their hats into the air, the fans of the winning team let out loud shouts of victory.
| A．To throw | B．Thrown | C．Throwing | D．Being thrown |
They desired that they _____ the right to vote.
| A．had | B．have | C．are | D．were |
As the boy listened attentively in class, everything his teacher said was easily______.
| A．for him to understand | B．understood | C．to understand | D．to be understood |
Mary is said _____ in the supermarket for 5 years, but I don’t know why she resigned last month.
| A．to have been working | B．work | C．to be working | D．to have worked |
______ from the space, you will find the earth is blue.
| A．Seen | B．Seeing | C．See | D．To see |