Ever since my brother graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company.
Although the necklace is just made of ordinary stones, it still ________ young people.
With many major economic problems________ to be solved, there is no point predicting the growth rate of this year now.
The man is teaching in our school, but,believe it or not,he __ as a business man for 8 years.
_________ the final exams, I would have gone to the concert yesterday.
She hesitated at the gate of the canteen, _________ whether to enter or not.