The policeman told the injured bicycle rider that he would have to lie _____ he had fallen until the arrival of an ambulance.
a. because b. where c. after d. when
He studied hard at school when he was young, ___________leads to his success in his later life.
| A．what | B．which | C．that | D．so that |
Mr. Smith is one of the foreign experts who ___________in China.
| A．works | B．is working | C．are working | D．has been working |
They are letting us use their computers, and ___________we are giving them the results of our research.
| A．in turn | B．in theory | C．in return | D．in general |
He ___________all his pockets but failed to find his passport.
| A．searched | B．searched for | C．in searched of | D．looked for |
Every minute is made full _______ of _______ our lessons well.
A. to use; study B. use; studying C use; to study D. used; studying