Lily is so shy that whenever she is introduced to strangers, she always ______ at them quickly and then looks down at the ground.
________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.