I think it ______ that one have a good command of English if one wants to be engaged in international trade.
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.