When will deep snow lead to floods?（）

• A、The snow suddenly gets frozen

• B、The top of the ground becomes wet

• C、It rains hard with a big rise in temperature

• D、The snow melts gradually into a river

53.

With a lot of work _______,Jerry had no time to go to the cinema with his daughter.（）

• A、doing

• B、having done

• C、done

• D、to do