There will be a concert in the stadium this week-end, but I don't know who will __________ the band.
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.