My sister is ________ shy when she speaks to others.

Don’t promise anything ________ you are one hundred percent sure.

It was brave ________him to jump into the river to save the child and it’s important________ him to help others.

 — When do you usually take a walk?—______ the morning.

—What is your mother going to do this Saturday?—I’m not sure. She ______ go to see my grandmother.