Please _____________the numbers and I’m sure they will_______1000.
Frequent smoggy weather has set the alarm ringing; by no means can we develop economy _____ the environment.
The English play _____ my students acted at the New Year’s party was a great success.
If you _____ regret things you did or didn’t do in the past, then you won’t be able to move forward.
— Why are you still here! Everybody has gone to attend the lecture by the president! — Oh, I ____ about it!
You probably have noticed that people express similar ideas in different ways, _______ the situation they are in.