–I’m losing my eyesight, I’m afraid.
--To finish this book, you ______ in front of your computer too long.
| A．work | B．are working | C．have been working | D．worked |
_____a reply he decided to write again.
| A．Not receiving | B．Receiving | C．Not having received | D．Having not received |
Little Franz thought of nothing but ______football .
| A．play | B．to play | C．played | D．playing |
Good care must babies particularly while they are ill.
| A．take | B．taken of | C．be taken | D．be taken of |
.If _____,the experiment will be successful.
| A．carefully doing | B．it done carefully | C．carefully done | D．doing carefully |
-What’s the chance of there _____an election this year?
- I have no idea.
| A．is | B．to be | C．being | D．be |