' Do I have to take this medicine before or after a meal?'

'I'll go jogging tomorrow unless it rains.'

'I haven't been able to use the Internet since this morning.'

'Do you mind if I take this seat?'

'We have been surfing all summer. The weather has been great.'

'Where shall we spend our next holiday?'

'Japanese is far more difficult to learn than English.'

'Did you use to believe in ghosts in your childhood?'

'He was bitten by a bee. His arm is swollen.'

'I can hear some music.'

'Do you know how to avoid catching a cold?'

'If it is cold I will take a jacket.'