.I’m sorry I can’t go to the film with you because I have a lot of things to _________.
That is the only way we can imagine _________ the overuse of water in students’ bathrooms.
The doctor recommended he ____ a few more days in hospital.
At school, some students are active____ some are shy, yet they can be good friends with one another.
_____ many times, he finally understood it.
Peter had intended to take a job in business, but____ that plan after the unpleasant experience in Canada in 2010.