Chinese President visited AIDS patients in Beijing's Ditan Hospital on the World AIDS Day, ________ was on Dec.1,2010, and ______ theme was to give all the AIDS patients medical care.
Every morning, week in, week out, from dawn to dusk , he ______ his place on the bend.
It was in 1990 ______ the medicine was tested on human patients.
I didn’t pass the oral test, so I am not _____ the mood to tell jokes.
— Jane and Joan have been friends for fifty years. — No wonder they have such a lot in ______.
He left school early, and as an adolescent, determined ______ in South American, set off from his home.