–Why didn’t you give a hand to the boy?-- I ______ , but he struggled to his feet before I tried to.
Between the two generations, it is often not their age, _________their education that causes misunderstanding.
—Ken has gone to the Africa country to work as a volunteer. — I would rather he _____there. The situation there is very tense.
What the children in the mountain village need ______ good books.
In front of our school ______, where a lot of people play or take exercise at any time.
His study in Peking University lasted four years, ______ he founded his own company in Hong Kong.