Our car broke down suddenly and the heavy rain________ our helplessness.
A. added to B. led to C. turned out D. made up
I have been told to donate blood by the health expert __________ I need some in the medical treatment one day.
A. even though B. as if
C. in case D. now that
Nelson Mandela _________ his life to fighting for a free society________ all people live together in harmony.
A. devoted; which B. spent; in which
C. devoted; in which D. spent; where
The number of various educational programs is increasing, _______ important roles have been realized by more and more people.
A. whose B. where C. which D. that
It is dangerous to take ________ from rain under a tree especially during a summer rainstorm.
A. cover B. shelter C. hiding D. advantage
--- What do you think of the grammar book?
--- Oh, it really is ________ useful reference book, which is worth reading ________ second time.
A. a; a B. an; the C. an; D. the; the
