I tried my best to make this speech but many listeners __________ laughing as soon as I began.
You will find the laptop well-designed when he ______ it ______.
As we all know, he never ______.
We ______ to clean the blackboard every day.
The old man is ______ under the tree and ______ a paper.
-Can you stand ______ in that way? - Absolutely not.