They ___________to put their hearts into study..

work with a strong will, we can overcome anydifficulty, _____great it is

“Haven’t seen you for ages！ Do you still work in Guangzhou？” “_______ It’s two years since I worked there”

How does your sister learn Russian, Mike—She learns it _______ listening to the tapes.

Can you tell me the name of the school ______ you visited last week?