Today the world is paying much more attention to, obviously, _____ China says and does.
From his ______ look, we could see that he hadn’t expected that we could raise such ______ questions to him.
The laboratory was well ______ for atomic research.
You must ______ a wide vocabulary if you want to learn a language well.
Don’t bother Tom, he is ______ with the experiment on water molecules in the lab.
Nowadays some parents regret not ______ more time with their kids when they were young.