Hi, Wang Ling, can’t you recognize me? -Oh, Ma Yan!I ________ you ________ your sisterIt’s so nice to meet you here!

The scientist corresponds with colleagues in order tolearn about matters ______ to her own research

It often _______ here in autumn every year.

The weather was great and the people werefriendly—_______ a perfect trip

I don’t like physics ______ it’s too difficult for me.