,please start the work tomorrow.
—______ 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.
He telephoned to inform me of your birthday.____________,I would have known nothing about it.