I think it is necessary for my 19-year-old son to have his own mobile phone, for I sometimes want to make sure if he _____ home for dinner.
Do you have any difficulty ________?
21st Century is ________ a newspaper. It helps us to improve our English a lot.
When he borrowed the camera last time, he broke it and I had to pay to get it ________.
My father asked me ________ with me.
Mary had to call a taxi because the box was ________ to carry all the way home.