I think Mr Li is one of ______ in our school.—-Me too. He’s friendly and helpful.

The CDs are on sale！Buy one and you get ______completely free.

What do you think of the meeting held yesterday evening?—It was a tiring one,I kept falling asleep.

This question is very difficult __________ I ask my brother for help.

My father is lovely and________,but sometimes he is not patient________me.[ ]