— What do you think of math? — I find difficult to learn it.
As we all know, it’s not polite to keep others _________ for a long time.
An official ___________ by some reporters on food problems in Shanghai yesterday.
We are glad to hear that the Greens __________ to a new flat next week.
Now my father __________ his bike to work every day instead of driving.
By the end of the last month, I _____________ all the CDs of Justin Bieber.