He is very popular among his students as he always tries to make them ____ in his lectures.
By the time you _________ your work this evening, I will be watching my favorite Korean TV series.
There standing _______ the hawthorn tree that stands for their love while _______ are the lovers.
Once ______ from space, the Great Wall is till great in sight.
A goal is to one’s life ________ a sail is to a boat. _______ can one succeed without a goal.
When I was in Suzhou, I found all the streets ________ neatly (整齐地).