The news shocked the public, to great concern about students’safey at school.
| A．having led | B．led | C．leading | D．to lead |
At no time does the salesgirl get up late in the morning, for she is always too busy _____ a good rest.
| A．to take | B．taking | C．took | D．taken |
It was _____ computer games that cost the boy a lot of time that he ought to have spent on his lessons.
| A．to have played | B．playing | C．played | D．having played |
_____ he’s only been learning English for a year, he speaks it very well.
| A．Considered | B．Considering | C．Having considered | D．To consider |
--- I hear Warren _____ in a middle school.
--- What? I can’t imagine him _____ as a teacher.
| A．teaches; working | B．teaches; work | C．teach; to work | D．teach; working |
The 18-storeyed building, when _____, will shut out the sun _____ up the rooms in my house.
| A．completed; lighted | B．completing; lighting | C．completing; lighted | D．completed; lighting |