It is the fourth time that Tom ______ in the maths exams.

___ in London, the penniless American wandered on the pavement, ___ to find a job to make a living.

We __________ back in the hotel now if you didn’t lose the map.

There is a new problem involvedin the popularity of private cars __________ road conditions require __________

in charge of two classes made Mrs. Li, head of Senior Grade 3, extremely tired.