中国大学MOOC: The best times to visit Sydney are of .
举一反三
- 中国大学MOOC: Sydney Tower is the tallest in Australia.
- They are going to visit Sydney ______ Christmas. A: at B: in C: for D: on
- In Summer, a lot of Australians will visit Bondi beach in Sydney, because _____.
- 中国大学MOOC: The Sydney Opera House is one of the largest in the world.
- 中国大学MOOC: Three times seven is twenty-one.