The ______ in my school always give the answer after the group did tasks

1. The ______ in my school always give the answer after the group did tasks. ( instruct )

2. We've just spent 200 million on ________ our computer network. ( improve )

3. You have to _____ wear a mask if you are at public places such as street, hospital, office,... ( compel )

4. _______ words from parents and teachers help children feel more confident. ( encourage )