They _______ to come to the meeting on time,but they were late again
However difficult you find to arrange your time, it will pay off in the long run.
Walter offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.
ThejobprovedtobemuchmoredifficultthanI______.
It was 300 hundred years ago _______ this historic temple was built by a wealthy Mandarin.
The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better.