_________ are good friends .
— I missed the beginning of The Voice of China yesterday evening.—_________! But you can watch the re-play tonight.
What method can you think of _________ with these broken computers?
Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉).
—What shall we do this Saturday? — it rains, we’ll have a picnic in Century Park.
It's a pity that I didn't think of ringing you .