—Which English is the best one to learn, American, British or Canadian English, Susan?—Well, there is no best English. They are all good and correct.
The girl’s sudden death _____ the police’s _____ this matter.
With the crop’s production _____ rapidly, food price is _____ year by year.
We don’t doubt _____ he can do a good job.
On his way to school, he was _____.
The woman _____ there, _____ in a blue shirt, is Lily’s teacher.