—Why do you look so worried? —My Macbook Pro broke down and my paper _____unfinished since.
________the birthrate down by 10%,the number of the population has decreased.
The army went ________the thick forest and at last came to a little river.
You have made several mistakes in your exercises but ________you have done well.
The water lever has risen ________10 cm and up to 100cm in the last days.
The touch they had both kept in ________many years broke.