Some students can do very well in English exams, but can understand what a native speaker says.
------Whose shirt is this?------ It _______ be Li Lei’s. It is too big for him.
Stop smoking, _______ you will get better soon.
—How long have you _______________ the motorbike?—For about two weeks.
On March 11, 2011 ______ earthquake hit Japan.
---Thank you for your useful advice.---________________.