All the machines stopped _____ with the electricity _____ throughout the factory.
-- How’s your tour around the North Lake? Is it beautiful? --- It ________ be, but it is now heavily polluted (污染).
It _____ we had stayed together for a couple of weeks ____ I found we had a lot in common.
Gorge couldn’t remember when he first met Mr. Anderson, but he was sure it was _____ Sunday because everybody was at _______ church.
_______ basketball, the girl students are also encouraged to play football.
The murder was eventually caught _____ the help of Mr. Su who sent a report.