______ by the beautiful scenery, I forgot to go back home in time.
| A．Impressing | B．To be impressed | C．Having impressed | D．Impressed |
—Thank you for the flowers.
—_______. I thought they might cheer you up.
| A．That’s right |
| B．All right |
| C．I’m all right |
| D．It’s all right |
From space, the earth looks blue. This is _______ about seventy-one percent of its surface is covered by water.
| A．why |
| B．how |
| C．because |
| D．whether |
________ felt funny watching myself on TV.
| A．One |
| B．This |
| C．It |
| D．That |
Not to be recognized, he dressed himself ________ rags on purpose.
| A．with |
| B．in |
| C．/ |
| D．For |
Believe in me! They ________ in the workshop last night.
| A．stay |
| B．are ataying |
| C．did stay |
| D．have stayed |