Shall I keep an eye on your house when you are on holiday—________.

What happened hereyesterday—–An adventurer was walking at the footof the mountain ______ suddenly a stone fell and hit him on the head.

e greatly shockedto hear the news that ______ two Chinese engineers were shot to death inPakistan. Worse still, ______ third one died in a hospital afterwards.

Your composition is full of mistakes. —I wish I _________more careful.

Some researchers believe that there is no doubt ______ a cure for AIDS will be found.