My mother ________ always wave goodbye to me while I was leaving for school.
In winter, the town is often _____by snow.
His subtle acting made _________ people laugh, feeling more _______ their lives.
Farmers here _________keeping the soil rich and _________diseases.
One of her achievements is helping us understand _________ chimps ______ like humans.
________ I’m __________ about the work. I’m not strong enough for it.