My old neighbor Charles felt _______ after his children all moved out.

—Can you ride a horse?—Sorry, I____________ .But I can ride a bike very well.

We _______  pay to get into the concert. It's free.

 - Have you _______ some new ideas?- Yeah. I'll tell you later.

-- What do you think of ‘Eat-up’ Campaign (光盘行动)?--I think it’s really necessary. It is reported that the food that Chinese peopleevery year is enough to feed 200 million people for a year.