Our foreign English teacher always ___ us students how to get to know about the culture and customs of foreign countries.
Look out! Don’t get too close to the house the roof is under repair.
Is some American friends visited last week?
. After two hours of walking, they came to the camp site, ______ .
. —______ that he managed to get the book? — Oh, his sister helped him.
The reason______ he was late for class is______ he didn’t catch the first bus.