More historical buildings in the old town will fall down ________we try our best to protect them.

        the children have fun, parents can take dance lessons on the beach.

— Why didn’t you try your best to get on the subway? — I tried to, but it started moving ______ I could get on it.

We believe _______ we could finally go to a good senior high school.

—Excuse me. How can I get to the library?—walk along this street_______ you see the traffic lights. You will find it on your left.