Smoking too much may ______ lung cancer and cause other diseases.
A. devote to B. attend to
C. contribute to D. come to
Mary felt sad over the loss of photos she had shot in Australia, ______ that was a memory she especially treasured.
A. as B. which C. when D. where
With the guide ______ the way, we finally got to the village which we were looking for.
A. led B. leading C. to lead D. had led
Perseverance is a kind of quality, and that is ______ it takes to do everything well.
A. why B. that C. what D. which
Jane has been so ______ in getting used to everything that she hasn’t had time for social activities.
A. confused B. worried C. devoted D. occupied
As the busiest woman in the village, she made ______ her duty to look after all the other people’s affairs in that village.
A. this B. that C. one D. it
