Shelly had prepared carefully for her biology examination so that she could be sure of passing it at her first _____.
John failed in the exam, ________he had prepared a lot for it before.
—______ have you studied English? —For six years.
Nuclear radiation is said __________ the biggest health challenge in Japanese Earthquake over the past few months.
They must have been enjoying themselves there,or they __________ so long.
—Did you enjoy your journey to the village? — __________.We had driven more than 3 hours before we found the right way.