There is usually ________ in summer in Yangzhou, it helps crops(庄稼) grow well.

Thanks _______ your last letter.[ ]

He had a lot of friends, only a few of ______ invited to his wedding.

I prefer speaking to listening in English learning.—Oh, really! I think you should be good at _____of them.

Look! There is __________ old car in front of the house.