--- Has your wife come back from Africa?---Yes, but she _____here for only one month before she went on another expedition to Cuba
She observed a man ________on the opposite of the street.
She dislikes ________in public places.
I'm very tired ________walking for two hours.
It is Tu Youyou ________was presented the 2011 Lasker Clinical Medical Research Award on September 12.
We can ________a note of what the teacher says in class and ________notes afterwards.