As environment protection is becoming _______ public concern, _______ government is determined to pay more attention to the issue.
The notice came around two o’clock in the afternoon _______ the meeting would be put off.
--What should I prepare for him? --________ anything. He is not particular with food.
He had no choice but to go on because it is their agreement that no one ______ quit the plan half way.
We had an anxious couple of weeks, _______ for the results of the experiment.
The most interesting thing to the small boy was _______ he got close to the door, it would open of itself.