The number of people in their class _______51.
This small seaside village is such a perfect place for holidays that visitors never leave it____________.
--- Sorry for the delay.I got lost in the mountain. --- OK.You’re safe and that’s what .
There came a point in his life ______ he had to think seriously about his future.
a bad habit is formed, it will take a long time to get rid of it.
Li Gang was required to apologize the people present at the meeting __ what he had done.